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CVE-2025-32990 is a heap-based buffer overflow vulnerability in GnuTLS affecting the template parsing logic of the certtool utility. The flaw is described as an off-by-one condition triggered while certtool reads certain settings from a template file. A crafted template can cause an out-of-bounds NULL write past the end of a heap buffer, leading to memory corruption. The vulnerable condition resides in certtool’s handling of template-driven certificate generation or processing input, and exploitation can terminate the utility or destabilize the affected process.
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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.
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Patch, then assume compromise.
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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.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.