CVE-2026-40135: An OS Command Injection vulnerability exists in the SAP NetWeaver Application Server for ABAP and ABAP Platfor

This month

MEDIUM 6.5DOWNGRADE

CVE-2026-40135 is a medium-severity flaw (CVSS 6.5) affecting netweaver application server abap. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An OS Command Injection vulnerability exists in the SAP NetWeaver Application Server for ABAP and ABAP Platform that allows an authenticated attacker with administrative access to execute specially crafted shell commands on the server, bypassing the logging mechanism. This allows the execution of unintended OS commands without detection, potentially impacting the integrity and availability of the application, with no impact on confidentiality.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-77
Published	2026-05-12
Last modified	2026-10-26

Publisher (CNA): SAP SE · Vendor: sap

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-12 03:16 UTCPublished CVE record published
2026-10-26 18:10 UTCUpdated Record last modified

sap netweaver application server abap DOWNGRADE

Affected: 700 · 701 · 702 · 731 · 740 · 750 · 751 · 752

Fixed in: no fixed release known

Safe to downgrade to: a release before 700

1. Check installed version

apt-cache policy netweaver-application-server-abap || rpm -q netweaver-application-server-abap || netweaver-application-server-abap --version

2. No fixed release: DOWNGRADE to a release before 700 (Debian / Ubuntu)

apt-cache madison netweaver-application-server-abap sudo apt install netweaver-application-server-abap=<VERSION_BEFORE_700> sudo apt-mark hold netweaver-application-server-abap

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list netweaver-application-server-abap sudo dnf downgrade netweaver-application-server-abap-<VERSION_BEFORE_700> sudo dnf versionlock add netweaver-application-server-abap

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-40135?

netweaver application server abap: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-40135 being exploited?

CVE-2026-40135 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-40135 affect?

CVE-2026-40135 affects netweaver application server abap. Severity is medium (CVSS 6.5). An OS Command Injection vulnerability exists in the SAP NetWeaver Application Server for ABAP and ABAP Platform that allows an authenticated attacker with administrative access to execute specially crafted shell commands on the server, bypa

How urgent is CVE-2026-40135?

Priority 41/100. No elevated risk signals yet.

Software pages

SAP vulnerabilities

Related CVEs

CVE-2026-34257 MEDIUM 6.1 DOWNGRADE Due to an Open Redirect vulnerability in SAP NetWeaver Application Server ABAP, an unauthenticated attacker co
CVE-2026-27682 MEDIUM 4.7 DOWNGRADE Due to a reflected cross-site scripting (XSS) vulnerability in SAP NetWeaver Application Server ABAP (Applicat
CVE-2026-27680 LOW 3.1 DOWNGRADE Due to improper input handling under certain conditions, SAP NetWeaver Application Server ABAP allows an attac

References

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