CVE Intelligence
Critical Access control

CVE-2017-5648 — Exposure of Resource to Wrong Sphere in Apache Tomcat

While investigating bug 60718, it was noticed that some calls to application listeners in Apache Tomcat 9.0.0.M1 to 9.0.0.M17, 8.5.0 to 8.5.11, 8.0.0.RC1 to 8.0.41, and 7.0.0 to 7.0.75 did not use the appropriate facade object. When running an untrusted application under a SecurityManager, it was therefore possible for that untrusted application to retain a reference to the request or response object and thereby access and/or modify information associated with another web application.

Published Apr 17, 2017 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · 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.

No exploitation signal in the sources consulted so far.
How the score was calculated
  • EPSS 13.2% (30-day exploitation probability)+14
  • Technical severity (critical)+10

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
13.23%
ahead of 96% of scored CVEs · Oct 15, 2026
Affects
Apache Software Foundation
Tomcat and 2 more
CVSS base
9.1
Critical · 2 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
No
can an attacker script the kill-chain steps
Technical impact
Partial
partial · total control of the vulnerable component

Remediation

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

  • Maven Org.apache.tomcat:tomcat-catalina: fixed in version 9.0.0.M18 — github.com (GitHub Security Advisories)
  • Maven Org.apache.tomcat:tomcat-catalina: fixed in version 8.5.13 — github.com (GitHub Security Advisories)
  • Maven Org.apache.tomcat:tomcat-catalina: fixed in version 8.0.42 — github.com (GitHub Security Advisories)
  • Maven Org.apache.tomcat:tomcat-catalina: fixed in version 7.0.76 — github.com (GitHub Security Advisories)
  • Maven Org.apache.tomcat.embed:tomcat-embed-core: fixed in version 9.0.0.M18 — github.com (GitHub Security Advisories)
  • Maven Org.apache.tomcat.embed:tomcat-embed-core: fixed in version 8.5.13 — github.com (GitHub Security Advisories)
  • Maven Org.apache.tomcat.embed:tomcat-embed-core: fixed in version 8.0.42 — github.com (GitHub Security Advisories)
  • Maven Org.apache.tomcat.embed:tomcat-embed-core: fixed in version 7.0.76 — github.com (GitHub Security Advisories)

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 Tomcat, Maven Org.apache.tomcat:tomcat-catalina, Maven Org.apache.tomcat.embed:tomcat-embed-core).
  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 96% of scored CVEs: prioritize it in the patch queue.
  5. Search available logs for exploit probes matching the vulnerability class (access control), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Apache Software Foundation Tomcat version 9.0.0-milestone5version 9.0.0-milestone13version 9.0.0-milestone14version 9.0.0-milestone15version 9.0.0-milestone16version 9.0.0-milestone17version 9.0.0-milestone2version 9.0.0-milestone3
and 140 more version 9.0.0-milestone4version 8.0.40version 9.0.0-milestone6version 9.0.0-milestone7version 9.0.0-milestone8version 9.0.0-milestone9version 9.0.0-milestone11version 8.0.39version 8.0.41version 8.5.0version 8.5.1version 8.5.2version 8.5.3version 8.5.4version 8.5.5version 8.5.7version 9.0.0-milestone12version 9.0.0-milestone10version 9.0.0-milestone1version 8.5.11version 8.5.10version 8.5.9version 8.5.8version 8.5.6version 7.0.0version 7.0.1version 7.0.2version 7.0.3version 7.0.4version 7.0.5version 7.0.6version 7.0.7version 7.0.8version 7.0.9version 7.0.10version 7.0.11version 7.0.12version 7.0.13version 7.0.14version 7.0.15version 7.0.16version 7.0.17version 7.0.18version 7.0.19version 7.0.20version 7.0.21version 7.0.22version 7.0.23version 7.0.24version 7.0.25version 7.0.26version 7.0.27version 7.0.28version 7.0.29version 7.0.30version 7.0.31version 7.0.32version 7.0.33version 7.0.34version 7.0.35version 7.0.36version 7.0.37version 7.0.38version 7.0.39version 7.0.40version 7.0.41version 7.0.42version 7.0.43version 7.0.44version 7.0.45version 7.0.46version 7.0.47version 7.0.48version 7.0.49version 7.0.50version 7.0.51version 7.0.52version 7.0.53version 7.0.54version 7.0.55version 7.0.56version 7.0.57version 7.0.58version 7.0.59version 7.0.60version 7.0.61version 7.0.62version 7.0.63version 7.0.64version 7.0.65version 7.0.66version 7.0.67version 7.0.68version 7.0.69version 7.0.70version 7.0.71version 7.0.72version 7.0.73version 7.0.74version 7.0.75version 8.0.0version 8.0.0-rc1version 8.0.1version 8.0.2version 8.0.3version 8.0.4version 8.0.5version 8.0.6version 8.0.7version 8.0.8version 8.0.9version 8.0.10version 8.0.11version 8.0.12version 8.0.13version 8.0.14version 8.0.15version 8.0.16version 8.0.17version 8.0.18version 8.0.19version 8.0.20version 8.0.21version 8.0.22version 8.0.23version 8.0.24version 8.0.25version 8.0.26version 8.0.27version 8.0.28version 8.0.29version 8.0.30version 8.0.31version 8.0.32version 8.0.33version 8.0.34version 8.0.35version 8.0.36version 8.0.37version 8.0.38
Vulnerable NIST National Vulnerability Database
Apache Software Foundation Tomcat version 9.0.0.M1 to 9.0.0.M17version 8.5.0 to 8.5.11version 8.0.0.RC1 to 8.0.41version 7.0.0 to 7.0.75 Vulnerable CVE Program (cve.org) e CISA ADP
Maven Org.apache.tomcat:tomcat-catalina ≥ 9.0.0.M1 and ≤ 9.0.0.M17≥ 8.5.0 and ≤ 8.5.12≥ 8.0.0 and ≤ 8.0.41≥ 7.0.0 and ≤ 7.0.75 Vulnerable GitHub Security Advisories
Maven Org.apache.tomcat.embed:tomcat-embed-core ≥ 9.0.0.M1 and ≤ 9.0.0.M17≥ 8.5.0 and ≤ 8.5.12≥ 8.0.0 and ≤ 8.0.41≥ 7.0.0 and ≤ 7.0.75 Vulnerable GitHub Security Advisories

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
None

Every base score collected

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

ScoreVersionSeverityExpl.ImpactScored by
9.1 CVSS 3.0 Critical 3.9 5.2 nvd@nist.gov via NIST National Vulnerability Database
9.1 CVSS 3.0 Critical — — GitHub, Inc. via GitHub Security Advisories
6.4 CVSS 2.0 Medium 10.0 4.9 nvd@nist.gov via NIST National Vulnerability Database
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N (score shown at the top: nvd@nist.gov)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-668 · Exposure of Resource to Wrong Sphere

Other CVEs with this weakness →

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).
  • Audit administrative actions and access to resources outside each user’s normal pattern.
web/proxy/WAF logsnetwork IDS/IPSauthentication logsapplication logs

Timeline

What happened to this CVE, newest first.

  • 2026
  • Fix documented
    Oct 15, 2026 · GitHub Security Advisories
  • Affected products added · maven/org.apache.tomcat:tomcat-catalina, maven/org.apache.tomcat.embed:tomcat-embed-core
    Oct 15, 2026 · GitHub Security Advisories
  • Affected products added · apache software foundation/apache tomcat
    Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
  • Record published
    Oct 15, 2026
  • Affected products added · apache/tomcat
    Oct 15, 2026 · NIST National Vulnerability Database
  • CVSS changed · 9.1
    Oct 15, 2026 · NIST National Vulnerability Database
  • Source status changed · → Modified
    Oct 15, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 15, 2026 · Alertas do Telegram
  • 2017
  • CVE published
    Apr 17, 2017 · apache

Source activity

Repeated readings are counted rather than listed.

  • 2× References added · Oct 15, 2026 – Oct 15, 2026
  • 1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

41 on the record

Elsewhere on this site

Apache Software Foundation
every CVE for this vendor
Access control
same class
CWE-668
other pages naming this weakness

Related CVEs (same products)

  • CVE-2026-87022 Apache Tomcat: WebSocket message smuggling with per-message-deflate 22d
  • CVE-2026-86350 Apache Tomcat: Regression in fix for CVE-2026-41293 can trigger request header mix-up 22d
  • CVE-2026-86248 Apache Tomcat: Fix for CVE-2026-34500 was incomplete. OCSP checks sometimes soft-fail with FFM even when soft-fail is disabled 22d
  • CVE-2026-78437 Apache Tomcat: HTTP/2 DoS via malformed request 22d
  • CVE-2026-78383 Apache Tomcat: AJP DoS via missing request body 22d
  • CVE-2026-79677 Apache Tomcat: WebSocket DoS due to lost asynchronous write timeout 22d

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-2017-5648 is "Exposure of Resource to Wrong Sphere in Apache Tomcat", rated Critical. It affects Tomcat (Apache Software Foundation); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 9.1 describes technical severity. EPSS 13.23% 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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