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CVE-2026-21413 is a heap-based buffer overflow in LibRaw's lossless_jpeg_load_raw functionality, associated with improper validation of an array index. The function decodes lossless JPEG data embedded in RAW image formats, notably Canon CR2. Processing a specially crafted malicious image can corrupt heap memory and potentially cause an application crash or arbitrary code execution in applications using the affected library.
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No public exploit code observed for this vulnerability.
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12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A heap-based buffer overflow in LibRaw's lossless_jpeg_load_raw functionality can be triggered by an attacker-supplied malicious file. The reference rates the vulnerability High with a CVSS v3 base score of 7.5 and reports that exploits and a patched package are available.
A vulnerability tracked as CVE-2026-21413, addressed by an AlmaLinux 9.2/TuxCare local security-check advisory. The available metadata rates it Important and indicates that exploits are available.
A vulnerability referenced by the Rocky Linux 9.6 local security-check plugin; no technical vulnerability details are provided.
A heap-based buffer overflow in LibRaw's lossless-JPEG loading functionality that can permit arbitrary code execution in darktable.
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.