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CVE-2026-40553 is a buffer overflow in the ftype() routine in gawk's extension/readdir.c. It affects gawk 5.4.0 and earlier. Exploitation can crash the affected program and may potentially permit code execution, although code-execution feasibility has not been confirmed.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
36 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in the referenced Alma Linux 9.6 advisory with local attack-vector requirements and low impacts to integrity and availability across vulnerable and subsequent systems under the supplied CVSS v4 vector.
A vulnerability referenced in the Rocky Linux 9.6 security check. The supplied CVSS v3 vector describes low-complexity, unauthenticated network exploitation with high integrity and availability impact.
A buffer-overflow vulnerability in gawk's ftype() routine that may permit code execution or denial of service on affected Rocky Linux 9 systems.
A buffer-overflow vulnerability in gawk's ftype() routine that may permit code execution or denial of service.
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.