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CVE-2026-5140 is a CRLF injection vulnerability in Pardus Update / Pardus affecting the pardus-update component. The flaw is described as improper neutralization of CRLF sequences and is present in SystemSettingsWrite.py, where user-controlled input is written into /etc/pardus/pardus-update.conf. In the reported exploit chain, newline characters were sanitized but carriage return characters were not, allowing an attacker to inject an additional configuration directive such as custom_sourcesd_path via a payload like 123\rcustom_sourcesd_path=/tmp/pwn.list. This can alter the APT source configuration consumed by the update mechanism. Supporting reporting also describes CVE-2026-5140 as part of a broader local privilege-escalation chain involving permissive Polkit rules and an untrusted search path in AutoAptUpgrade.py, ultimately enabling execution of attacker-controlled package installation logic as root. The CVE record states the issue affects Pardus Update from 0.6.3 before 0.6.4; supporting content also references broader Pardus version ranges up to but before 0.8.0.
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A critical local privilege escalation vulnerability chain in Pardus Linux's pardus-update package that allows an unprivileged local user to gain root access by chaining a Polkit authorization bypass, CRLF injection, and untrusted APT source path handling.
An authentication bypass vulnerability in TUBITAK BILGEM Software Technologies Research Institute Pardus caused by improper neutralization of CRLF sequences (CRLF injection).
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.