Background exploitation KEV catalog No authentication

CVE-2022-22536

SAP Multiple Products HTTP Request Smuggling Vulnerability

CheckOps priority index

9.3/10 Patch within 24 h

Severity9.8

Probability9.8

Exploitation4/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 97.9% higher than 99.9% of CVEs

CVSS 3.1 9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:

Exploited for 1,538 days 18 Aug 2022

CISA due date 08 Sept 2022 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 4 / 5

KEV catalog (CISA)18 Aug 2022
Exploited in EUVD (ENISA)18 Aug 2022
Used by ransomwareno
EPSS above 10 %97.9%
No account, over the networkyes

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply updates per vendor instructions.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

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.

Affected products

SAP Web DispatcherSAP NetWeaver and ABAP PlatformSAP Content ServerMultiple Products

Affected versions

7.53
7.49
7.86
7.22EXT
KRNL64NUC 7.22
KERNEL 7.22
7.77
7.85
KRNL64UC 8.04
7.87
7.22
7.81

Weaknesses (CWE)

CWE-444

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

09 Feb 2022
Published
18 Aug 2022
Exploitation reported (ENISA)
18 Aug 2022
Added to the KEV catalog
08 Sept 2022
CISA remediation due date
26 Sept 2026
EPSS peak: 97.9%

References

Other exploited vulnerabilities from the same vendor

CVE-2025-42999SAP NetWeaver Deserialization Vulnerability
6.4 · Background exploitation
CVE-2025-31324SAP NetWeaver Unrestricted File Upload Vulnerability
10.0 · Background exploitation
CVE-2017-12637SAP NetWeaver Directory Traversal Vulnerability
8.3 · Background exploitation
CVE-2019-0344SAP Commerce Cloud Deserialization of Untrusted Data Vulnerability
5.9 · Background exploitation
CVE-2021-38163SAP NetWeaver Unrestricted File Upload Vulnerability
6.9 · Background exploitation
CVE-2016-2388SAP NetWeaver Information Disclosure Vulnerability
6.1 · Background exploitation