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CVE-2026-46675 is a use-after-free vulnerability in the sequential reader of libpng versions 1.6.0 through 1.6.58. Incomplete decompression of crafted zTXt, iTXt, or iCCP chunks can leave a stale zlib input pointer and input count after the chunk handler releases the stream. If an application calls png_read_end after png_read_info without first starting to read image rows, decompression can resume using that stale pointer. For zTXt and iTXt chunks, subsequent chunk-buffer reallocation can produce a heap use-after-free; for iCCP chunks, the pointer can reference expired local arrays, producing a stack use-after-return. Exploitation can cause an application crash. libpng 1.6.59 fixes the vulnerability.
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No public exploit code observed for this vulnerability.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A use-after-free vulnerability in libpng affects Debian 12 bookworm packages and could cause denial of service. The plugin assigns a critical CVSS v3 score of 9.8, although the advisory description specifically identifies denial of service. Debian fixed the issue in libpng1.6 version 1.6.39-2+deb12u6. Nessus checks the reported package version rather than testing exploitation.
A medium-severity use-after-free vulnerability in libpng's `png_read_end` processing when zTXt, iTXt, or iCCP decompression is incomplete. The Amazon Linux CVSS v3.1 vector indicates local access, high attack complexity, no privileges or user interaction required, and availability impact.
A critical network-reachable vulnerability affecting Debian 13 libpng packages. The supplied CVSS v3 vector indicates low-complexity, unauthenticated remote exploitation without user interaction, with high confidentiality, integrity, and availability impact.
A critical, remotely exploitable vulnerability affecting the Debian Linux libpng1.6 package, with no privileges or user interaction required and potential for complete confidentiality, integrity, and availability impact.
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.