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CVE-2026-40469 is an integer overflow in the do_sub() routine in GNU gawk's builtin.c. The flaw affects 32-bit gawk builds through version 5.4.0. Exploitation can overwrite gawk heap metadata and objects, resulting in a program crash.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
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.
12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical remotely exploitable vulnerability with low attack complexity and no authentication requirement; the supplied CVSS v2 vector indicates complete integrity and availability impact.
A critical remotely exploitable vulnerability requiring no privileges or user interaction, with high integrity and availability impact according to the supplied CVSS v3 vector.
A critical vulnerability tracked as CVE-2026-40469, covered by a CentOS 7 TuxCare local security check. The supplied CVSS v3 vector indicates unauthenticated network exploitation with high integrity and availability impact.
A remotely reachable, low-complexity vulnerability requiring no privileges or user interaction, with high integrity and availability impact according to the provided CVSS v3 vector. It is addressed by the referenced Alma Linux security update.
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.