Is CVE-2026-5140 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-5140 being exploited in the wild.

How severe is CVE-2026-5140?

High severity, with a CVSS score of 8.8, published 29 April 2026.

Which products and versions are affected?

TÜBİTAK BİLGEM Pardus Update 0.6.3 to 0.6.4.

Is there a fix for CVE-2026-5140?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-5140 attacked?

It is attacked over the network, in an operating system.

Am I affected by CVE-2026-5140?

Check whether you run TÜBİTAK BİLGEM Pardus Update at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-5140: TUBITAK BILGEM Pardus Update CRLF injection authentication bypass

CVE-2026-5140 · Severity: high · CVSS 8.8 · Published 2026-04-29

A security vulnerability has been identified in the update component of Pardus, a Linux-based operating system. This flaw allows an attacker to bypass authentication mechanisms, potentially gaining unauthorized access to the system. Such an exploit could lead to the compromise of sensitive data or the disruption of system operations.

Vendors: TÜBİTAK BİLGEM.

Quick answers

Is CVE-2026-5140 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-5140 being exploited in the wild.
How severe is CVE-2026-5140?: High severity, with a CVSS score of 8.8, published 29 April 2026.
Which products and versions are affected?: TÜBİTAK BİLGEM Pardus Update 0.6.3 to 0.6.4.
Is there a fix for CVE-2026-5140?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-5140 attacked?: It is attacked over the network, in an operating system.
Am I affected by CVE-2026-5140?: Check whether you run TÜBİTAK BİLGEM Pardus Update at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A CRLF injection vulnerability (CWE-93) exists in the Pardus Update component due to improper neutralization of carriage return and line feed sequences. An attacker can exploit this flaw over the network to bypass authentication mechanisms. The vulnerability requires some user interaction (UI:R) and affects versions 0.6.3 through 0.6.4. Successful exploitation allows for high impact on confidentiality, integrity, and availability. A fix is available in version 0.6.4.

Affected products

TUBITAK BILGEM Software Technologies Research Institute Pardus Update 0.6.3 to 0.6.4

Timeline

2026-04-29: disclosed
2026-04-29: advisory

References

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