CVE Intelligence
Critical Insecure deserialization

CVE-2017-5645 — Deserialization of Untrusted Data in Apache Software Foundation Log4j

In Apache Log4j 2.x before 2.8.2, when using the TCP socket server or UDP socket server to receive serialized log events from another application, a specially crafted binary payload can be sent that, when deserialized, can execute arbitrary code.

Published Apr 17, 2017 · Updated Oct 13, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: apache

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

How the score was calculated
  • Public exploit/PoC (nuclei)+4
  • EPSS 89.8% (30-day exploitation probability)+15
  • Technical severity (critical)+10
  • Automatable exploitation (SSVC)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
89.79%
ahead of 100% of scored CVEs · Oct 14, 2026
Affects
Apache Software Foundation
Log4j and 78 more
CVSS base
9.8
Critical · 1 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation
None
none · proof-of-concept · active
Automatable
Yes
can an attacker script the kill-chain steps
Technical impact
Total
partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

  • Documented patch — www.oracle.com (NIST National Vulnerability Database)
  • Documented patch — www.oracle.com (NIST National Vulnerability Database)
  • Documented patch — www.oracle.com (NIST National Vulnerability Database)
  • Documented patch — www.oracle.com (NIST National Vulnerability Database)
  • Documented patch — www.oracle.com (NIST National Vulnerability Database)
  • Documented patch — www.oracle.com (NIST National Vulnerability Database)
  • Documented patch — www.oracle.com (NIST National Vulnerability Database)
  • Documented patch — www.oracle.com (NIST National Vulnerability Database)

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (Apache Software Foundation Log4j, Netapp Oncommand Api Services, Netapp Oncommand Insight…).
  2. The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
  3. Apply the fixed version or the patch documented under Remediation.
  4. EPSS ahead of 100% of scored CVEs: prioritize it in the patch queue.
  5. Search available logs for exploit probes matching the vulnerability class (insecure deserialization), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Apache Software Foundation Log4j ≥ 2.0 and < 2.8.2 Vulnerable NIST National Vulnerability Database
Apache Software Foundation Log4j version All versions between 2.0-alpha1 and 2.8.1 Vulnerable CVE Program (cve.org) e CISA ADP
Netapp Oncommand Api Services versions not specified by the source Vulnerable NIST National Vulnerability Database
Netapp Oncommand Insight versions not specified by the source Vulnerable NIST National Vulnerability Database
Netapp Oncommand Workflow Automation versions not specified by the source Vulnerable NIST National Vulnerability Database
Netapp Service Level Manager versions not specified by the source Vulnerable NIST National Vulnerability Database
Netapp Snapcenter versions not specified by the source Vulnerable NIST National Vulnerability Database
Netapp Storage Automation Store versions not specified by the source Vulnerable NIST National Vulnerability Database
Oracle Api Gateway version 11.1.2.4.0 Vulnerable NIST National Vulnerability Database
Oracle Application Testing Suite version 13.3.0.1 Vulnerable NIST National Vulnerability Database
Oracle Autovue Vuelink Integration version 21.0.0version 21.0.1 Vulnerable NIST National Vulnerability Database
Oracle Banking Platform version 2.6.0version 2.6.1version 2.6.2 Vulnerable NIST National Vulnerability Database
Oracle Bi Publisher version 11.1.1.7.0version 11.1.1.9.0version 12.2.1.3.0version 12.2.1.4.0 Vulnerable NIST National Vulnerability Database
Oracle Communications Converged Application Server - Service Controller version 6.1 Vulnerable NIST National Vulnerability Database
Oracle Communications Instant Messaging Server version 10.0.1.3.0 Vulnerable NIST National Vulnerability Database
Oracle Communications Interactive Session Recorder ≥ 6.0 and ≤ 6.2 Vulnerable NIST National Vulnerability Database
Oracle Communications Messaging Server < 8.0.2 Vulnerable NIST National Vulnerability Database
Oracle Communications Network Integrity ≥ 7.3.2 and ≤ 7.3.6 Vulnerable NIST National Vulnerability Database
Oracle Communications Online Mediation Controller version 6.1 Vulnerable NIST National Vulnerability Database
Oracle Communications Pricing Design Center version 11.1version 12.0 Vulnerable NIST National Vulnerability Database
Oracle Communications Service Broker version 6.0 Vulnerable NIST National Vulnerability Database
Oracle Communications Webrtc Session Controller < 7.2 Vulnerable NIST National Vulnerability Database
Oracle Configuration Manager version 12.1.2.0.2version 12.1.2.0.5 Vulnerable NIST National Vulnerability Database
Oracle Endeca Information Discovery Studio version 3.2.0 Vulnerable NIST National Vulnerability Database
Oracle Enterprise Data Quality version 12.2.1.3.0 Vulnerable NIST National Vulnerability Database
Oracle Enterprise Manager Base Platform version 12.1.0.5version 13.2.0.0 Vulnerable NIST National Vulnerability Database
Oracle Enterprise Manager For Fusion Middleware version 12.1.0.5version 13.2.0.0 Vulnerable NIST National Vulnerability Database
Oracle Enterprise Manager For Mysql Database ≤ 13.2.2.0.0 Vulnerable NIST National Vulnerability Database
Oracle Enterprise Manager For Oracle Database version 12.1.0.8version 13.2.2 Vulnerable NIST National Vulnerability Database
Oracle Enterprise Manager For Peoplesoft version 13.1.1.1version 13.2.1.1 Vulnerable NIST National Vulnerability Database
Oracle Financial Services Analytical Applications Infrastructure ≥ 7.3.3.0.0 and ≤ 7.3.3.0.2≥ 8.0.0.0.0 and ≤ 8.0.7.0.0 Vulnerable NIST National Vulnerability Database
Oracle Financial Services Behavior Detection Platform ≥ 8.0.0.0.0 and ≤ 8.0.4.0.0version 6.1.1 Vulnerable NIST National Vulnerability Database
Oracle Financial Services Hedge Management And Ifrs Valuations version 8.0.4version 8.0.5 Vulnerable NIST National Vulnerability Database
Oracle Financial Services Lending And Leasing ≥ 14.1.0 and ≤ 14.8.0version 12.5.0 Vulnerable NIST National Vulnerability Database
Oracle Financial Services Loan Loss Forecasting And Provisioning version 8.0.4version 8.0.5 Vulnerable NIST National Vulnerability Database
Oracle Financial Services Profitability Management ≥ 8.0.0.0.0 and ≤ 8.0.7.0.0version 6.1.1 Vulnerable NIST National Vulnerability Database
Oracle Financial Services Regulatory Reporting With Agilereporter version 8.0.9.2.0 Vulnerable NIST National Vulnerability Database
Oracle Flexcube Investor Servicing version 12.0.4version 12.1.0version 12.3.0version 12.4.0version 14.0.0 Vulnerable NIST National Vulnerability Database
Oracle Fusion Middleware Mapviewer version 12.2.1.2version 12.2.1.3 Vulnerable NIST National Vulnerability Database
Oracle Goldengate version 12.3.2.1.1 Vulnerable NIST National Vulnerability Database
Oracle Goldengate Application Adapters version 12.3.2.1.1 Vulnerable NIST National Vulnerability Database
Oracle Identity Analytics version 11.1.1.5.8 Vulnerable NIST National Vulnerability Database
Oracle Identity Management Suite version 11.1.2.3.0version 12.2.1.3.0 Vulnerable NIST National Vulnerability Database
Oracle Identity Manager Connector version 9.0 Vulnerable NIST National Vulnerability Database
Oracle In-memory Performance-driven Planning version 12.1version 12.2 Vulnerable NIST National Vulnerability Database
Oracle Instantis Enterprisetrack ≥ 17.1 and ≤ 17.3 Vulnerable NIST National Vulnerability Database
Oracle Insurance Calculation Engine version 10.1.1version 10.2.1 Vulnerable NIST National Vulnerability Database
Oracle Insurance Policy Administration version 10.0version 10.2version 11.0version 10.1 Vulnerable NIST National Vulnerability Database
Oracle Insurance Rules Palette version 10.0version 10.1version 10.2version 11.0version 11.1 Vulnerable NIST National Vulnerability Database
Oracle Jd Edwards Enterpriseone Tools version 4.0.1.0version 9.2 Vulnerable NIST National Vulnerability Database
Oracle Jdeveloper version 12.1.3.0.0version 12.2.1.3.0version 11.1.1.9.0 Vulnerable NIST National Vulnerability Database
Oracle Mysql Enterprise Monitor ≥ 3.4.0.0 and ≤ 3.4.7.4297≥ 4.0.0.0 and ≤ 4.0.4.5235≥ 8.0.0.0.0 and ≤ 8.0.0.8131 Vulnerable NIST National Vulnerability Database
Oracle Peoplesoft Enterprise Fin Install version 9.2 Vulnerable NIST National Vulnerability Database
Oracle Policy Automation version 12.2.2version 12.2.10version 12.2.9version 12.2.8version 12.2.7version 12.2.6version 12.2.5version 12.2.4
and 6 more version 12.2.3version 12.2.1version 12.2.0version 12.1.1version 12.1.0version 10.4.7
Vulnerable NIST National Vulnerability Database
Oracle Policy Automation Connector For Siebel version 10.4.6 Vulnerable NIST National Vulnerability Database
Oracle Policy Automation For Mobile Devices version 12.1.1version 12.2.10version 12.2.9version 12.2.8version 12.2.7version 12.2.6version 12.2.5version 12.2.3
and 6 more version 12.2.2version 12.2.1version 12.2.0version 12.1.0version 10.4.7version 12.2.4
Vulnerable NIST National Vulnerability Database
Oracle Primavera Gateway ≥ 16.2.0 and ≤ 16.2.11≥ 17.12.0 and ≤ 17.12.7 Vulnerable NIST National Vulnerability Database
Oracle Rapid Planning version 12.1version 12.2 Vulnerable NIST National Vulnerability Database
Oracle Retail Advanced Inventory Planning version 14.0version 15.0 Vulnerable NIST National Vulnerability Database
Oracle Retail Clearance Optimization Engine version 14.0.5 Vulnerable NIST National Vulnerability Database
Oracle Retail Extract Transform And Load version 13.0version 13.1version 13.2version 19.0 Vulnerable NIST National Vulnerability Database
Oracle Retail Integration Bus version 14.0.0version 14.1.0version 15.0version 16.0 Vulnerable NIST National Vulnerability Database
Oracle Retail Open Commerce Platform version 5.3.0version 6.0.1version 6.0.0 Vulnerable NIST National Vulnerability Database
Oracle Retail Predictive Application Server version 15.0.3 Vulnerable NIST National Vulnerability Database
Oracle Retail Service Backbone version 14.1version 15.0version 16.0 Vulnerable NIST National Vulnerability Database
Oracle Siebel Ui Framework version 18.7version 18.8version 18.9 Vulnerable NIST National Vulnerability Database
Oracle Soa Suite version 12.1.3.0.0version 12.2.1.3.0version 12.2.2.0.0 Vulnerable NIST National Vulnerability Database
Oracle Tape Library Acsls version 8.4 Vulnerable NIST National Vulnerability Database
Oracle Timesten In-memory Database version 11.2.2.8.49 Vulnerable NIST National Vulnerability Database
Oracle Utilities Advanced Spatial And Operational Analytics version 2.7.0.1 Vulnerable NIST National Vulnerability Database
Oracle Utilities Work And Asset Management version 1.9.1.2.12 Vulnerable NIST National Vulnerability Database
Oracle Weblogic Server version 10.3.6.0.0version 12.1.3.0.0version 12.2.1.3.0version 12.2.1.4.0version 14.1.1.0.0 Vulnerable NIST National Vulnerability Database
Red Hat Enterprise Linux version 6.0version 6.7version 7.0version 7.3version 7.4version 7.5version 7.6 Vulnerable NIST National Vulnerability Database
Red Hat Enterprise Linux Desktop version 7.0 Vulnerable NIST National Vulnerability Database
Red Hat Enterprise Linux Server version 7.0 Vulnerable NIST National Vulnerability Database
Red Hat Enterprise Linux Server Aus version 7.4version 7.6 Vulnerable NIST National Vulnerability Database
Red Hat Enterprise Linux Server Eus version 7.4version 7.5version 7.6 Vulnerable NIST National Vulnerability Database
Red Hat Enterprise Linux Server Tus version 7.4version 7.6 Vulnerable NIST National Vulnerability Database
Red Hat Enterprise Linux Workstation version 7.0 Vulnerable NIST National Vulnerability Database
Red Hat Fuse version 1.0 Vulnerable NIST National Vulnerability Database

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
9.8 CVSS 3.1 Critical 3.9 5.9 nvd@nist.gov via NIST National Vulnerability Database
7.5 CVSS 2.0 High 10.0 6.4 nvd@nist.gov via NIST National Vulnerability Database
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (score shown at the top: nvd@nist.gov)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-502 · Deserialization of Untrusted Data

Other CVEs with this weakness →

Public exploits, PoCs and detection templates

Public code that demonstrates or tests the flaw raises the odds of mass exploitation — and Nuclei templates help find vulnerable assets in your environment.

Warning: public PoCs are sometimes disguised malware. Use them only for authorized testing in an isolated environment. This portal does not host exploit code — it only points to the sources.

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 89.79%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
  • Monitor serialized objects in requests and unexpected processes spawned by the runtime.
web/proxy/WAF logsnetwork IDS/IPSendpoint telemetry (EDR)application logs

Timeline

What happened to this CVE, newest first.

  • 2026
  • Affected products added · apache software foundation/apache log4j
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • Record published
    Oct 13, 2026
  • Fix documented
    Oct 13, 2026 · NIST National Vulnerability Database
  • CVSS changed · 9.8
    Oct 13, 2026 · NIST National Vulnerability Database
  • Source status changed · → Modified
    Oct 13, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 13, 2026 · NIST National Vulnerability Database
  • 2017
  • CVE published
    Apr 17, 2017 · apache

Source activity

Repeated readings are counted rather than listed.

  • 1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

82 on the record

Elsewhere on this site

Apache Software Foundation
every CVE for this vendor
CWE-502
other pages naming this weakness

Related CVEs (same products)

  • Medium CVE-2026-104045 Sssd: sssd: denial of service via race condition in autofs responder 9d
  • Medium CVE-2026-104046 Sssd: sssd: denial of service via incomplete identity provider authentication requests 9d
  • High CVE-2026-104048 Sssd: sssd: authorization bypass via cross-domain username collision in hbac evaluation 9d
  • Medium CVE-2026-104047 Sssd: sssd: information disclosure via query injection in entra id lookups 9d
  • High CVE-2026-102558 Libsoup: libsoup: heap buffer overflow during websocket receive-buffer growth 16d
  • High CVE-2026-102555 Libsoup: libsoup: heap buffer overflow via uninitialized length in data-uri base64 decoding 16d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2017-5645 is "Deserialization of Untrusted Data in Apache Software Foundation Log4j", rated Critical. It affects Log4j (Apache Software Foundation); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 9.8 describes technical severity. EPSS 89.79% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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