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CVE-2026-2921 is an integer overflow vulnerability in GStreamer’s RIFF parser when handling palette data in AVI files. The flaw is caused by insufficient validation of attacker-controlled input, allowing an integer overflow to occur prior to a memory write. This memory corruption condition can be triggered by processing a specially crafted AVI file and may lead to arbitrary code execution in the context of the process using the GStreamer library. The issue is tracked in GStreamer as an integer overflow in the RIFF parser and has also been associated with denial of service in less favorable exploitation scenarios.
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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.
13 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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.