CISA KEV Critical Injection

CVE-2022-22536 — SAP Multiple Products HTTP Request Smuggling Vulnerability

SAP NetWeaver Application Server ABAP, SAP NetWeaver Application Server Java, ABAP Platform, SAP Content Server 7.53 and SAP Web Dispatcher are vulnerable for request smuggling and request concatenation. An unauthenticated attacker can prepend a victim's request with arbitrary data. This way, the attacker can execute functions impersonating the victim or poison intermediary Web caches. A successful attack could result in complete compromise of Confidentiality, Integrity and Availability of the system.

Published Feb 9, 2022 · Updated Oct 13, 2026 · Sources: CISA Known Exploited Vulnerabilities, CVE Program (cve.org) e CISA ADP, NIST National Vulnerability Database, GitHub Security Advisories · CNA: sap

Urgent

Who exploits it and how urgent it is

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

CISA KEV · Aug 18, 2022 Detection templates (Nuclei) · 1 Exploit-DB · 1 Proofs of concept on GitHub · 4

How the score was calculated

Confirmed exploitation (CISA KEV)+35
Public exploit/PoC (nuclei, exploitdb, github)+18
EPSS 97.9% (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

Confirmed

CISA KEV, listed Aug 18, 2022

EPSS FIRST

97.95%

ahead of 100% of scored CVEs · Oct 14, 2026

Affects

SAP SE

Netweaver Application Server Abap and 3 more

CVSS base

10.0

Critical · 4 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

Active

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.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

CISA required action CISA

Apply updates per vendor instructions.

US federal deadline: Sep 8, 2022 — passed 1498 day(s) ago

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.

Identify exposed assets running the affected vendor/product/version combinations (SAP SE Netweaver Application Server Abap, SAP SE SAP Content Server, SAP SE SAP NetWeaver and ABAP Platform…).
Treat as emergency remediation: the CVE is in CISA KEV (confirmed exploitation).
The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
EPSS ahead of 100% of scored CVEs: prioritize it in the patch queue.
Search available logs for exploit probes matching the vulnerability class (injection), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
SAP SE	Netweaver Application Server Abap	version krnl64uc_8.04version 7.22version 7.49version 7.53version 7.77version 7.81version 7.85version 7.86 and 9 more version 7.87version 8.04version krnl64nuc_7.22version krnl64nuc_7.22extversion krnl64nuc_7.49version krnl64uc_7.22version krnl64uc_7.22extversion krnl64uc_7.49version krnl64uc_7.53	Vulnerable	NIST National Vulnerability Database
SAP SE	SAP Content Server	version 7.53	Vulnerable	NIST National Vulnerability Database
SAP SE	SAP Content Server	version 7.53	Vulnerable	CVE Program (cve.org) e CISA ADP
SAP SE	SAP NetWeaver and ABAP Platform	version 8.04version KERNEL 7.22version 7.49version 7.53version 7.77version 7.81version 7.85version 7.86 and 5 more version 7.87version KRNL64UC 8.04version 7.22version 7.22EXTversion KRNL64NUC 7.22	Vulnerable	CVE Program (cve.org) e CISA ADP
SAP SE	SAP Web Dispatcher	version 7.53version 7.49version 7.87version 7.77version 7.81version 7.85version 7.22EXTversion 7.86	Vulnerable	CVE Program (cve.org) e CISA ADP
SAP SE	SAP Web Dispatcher	version 7.87version 7.86version 7.85version 7.81version 7.77version 7.53version 7.49version 7.22ext	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

Changed

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.

Score	Version	Severity	Expl.	Impact	Scored by
10.0	CVSS 3.1	Critical	3.9	6.0	nvd@nist.gov via NIST National Vulnerability Database
10.0	CVSS 3.1	Critical	—	—	GitHub, Inc. via GitHub Security Advisories
9.8	CVSS 3.1	Critical	3.9	5.9	134c704f-9b21-4f2e-91b3-4a467353bcc0 via NIST National Vulnerability Database
9.8	CVSS 3.1	Critical	—	—	CISA-ADP via CVE Program (cve.org) e CISA ADP
10.0	CVSS 2.0	High	10.0	10.0	nvd@nist.gov via NIST National Vulnerability Database

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H (score shown at the top: nvd@nist.gov)

Scoring entities (NIST, CNA, ADP) score independently; each score is shown with its origin. For prioritization we use 10.0 (NVD (NIST)) as a conservative provisional reference — not a definitive official score.

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-444 · HTTP Request Smuggling

Other CVEs with this weakness →

CISA KEV details CISA

CISA lists a CVE once it has evidence of exploitation against real targets.

Listed

Aug 18, 2022

Federal deadline

Sep 8, 2022

passed 1498 day(s) ago

Ransomware use

Unknown

CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a reference date.

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.

Detection templates (Nuclei)

SAP Memory Pipes (MPI) Desynchronization

Exploit-DB

SAP NetWeaver - 7.53 - HTTP Request Smuggling Apr 2, 2025

Proofs of concept on GitHub

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 97.95%

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).
Look for parameters with command/query metacharacters and unexpected child processes of the service.
Hunt retroactively in logs from before Aug 18, 2022 (KEV listing): exploitation may have started earlier.

web/proxy/WAF logsnetwork IDS/IPSapplication logsendpoint telemetry (EDR)

Timeline

What happened to this CVE, newest first.

2026
Affected products added · sap/content server, sap/netweaver application server abap, sap/web dispatcher
Oct 13, 2026 · NIST National Vulnerability Database
CVSS changed · 9.8 → 10.0
Oct 13, 2026 · NIST National Vulnerability Database
Source status changed · Published → Analyzed
Oct 13, 2026 · NIST National Vulnerability Database
Record published
Oct 13, 2026
Affected products added · sap se/sap netweaver and abap platform, sap se/sap web dispatcher, sap se/sap content server
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
CVSS changed · 9.8
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · → Published
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Added to CISA KEV (detected)
Oct 13, 2026 · CISA Known Exploited Vulnerabilities
Record created in this database
Oct 13, 2026 · CISA Known Exploited Vulnerabilities
2022
Added to CISA KEV catalog
Aug 17, 2022 · CISA
CVE published
Feb 9, 2022 · sap

Source activity

Repeated readings are counted rather than listed.

3× References added · Oct 13, 2026 – Oct 13, 2026
1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

6 on the record

www.sap.com/documents/2022/02/fa865ea4-167e-0010-bca6-c68f7e60039b.html
x_refsource_MISC, Broken Link, Not Applicable, Vendor Advisory, CVE Program (cve.org) e CISA ADP
www.cisa.gov/known-exploited-vulnerabilities-catalog
US Government Resource, NIST National Vulnerability Database
github.com/advisories/GHSA-6hc3-539h-6xc6
GitHub Security Advisories
launchpad.support.sap.com/
x_refsource_MISC, Permissions Required, CVE Program (cve.org) e CISA ADP
wiki.scn.sap.com/wiki/display/PSR/SAP+Security+Patch+Day+-+February+2022
GitHub Security Advisories
nvd.nist.gov/vuln/detail/CVE-2022-22536
GitHub Security Advisories

Elsewhere on this site

SAP SE
every CVE for this vendor

2022-08
what else CISA listed that month

Injection
same class

CWE-444
other pages naming this weakness

Related CVEs (same products)

Critical CVE-2026-44747 Memory Corruption vulnerability in SAP NetWeaver Application Server ABAP Jul 13, 2026
Medium CVE-2026-27680 CSS Injection vulnerability in SAP NetWeaver Application Server ABAP May 14, 2026
Medium CVE-2026-40135 OS Command Injection vulnerability in SAP NetWeaver Application Server for ABAP and ABAP Platform May 12, 2026
Medium CVE-2026-27682 Reflected Cross-Site Scripting (XSS) vulnerability in SAP NetWeaver Application Server ABAP (Applications based on Business Server Pages) May 12, 2026
Medium CVE-2026-34257 Open Redirect vulnerability in SAP NetWeaver Application Server ABAP Apr 13, 2026
Medium CVE-2026-27688 Missing Authorization check in SAP NetWeaver Application Server for ABAP Mar 10, 2026

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 fixed version, patch or mitigation documented.
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-2022-22536 is "SAP Multiple Products HTTP Request Smuggling Vulnerability", rated Critical. It affects Netweaver Application Server Abap (SAP SE); versions are in the scope table. It is in CISA KEV: there is evidence of real-world exploitation. CVSS 10.0 describes technical severity. EPSS 97.95% 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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