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CVE-2026-68546 is a heap out-of-bounds write in Exiv2's RemoteIo::Impl::populateBlocks() function. The vulnerable RemoteIo code path is used when Exiv2 processes a remote URL rather than a local file. A malicious remote server or attacker-controlled URL processed through this functionality can trigger the memory-corruption condition. Exiv2 versions earlier than 0.28.9 are affected.
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No public exploit code observed for this vulnerability.
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A high-severity vulnerability affecting Exiv2 packages on Amazon Linux 2. The provided CVSS v3 vector indicates network-reachable exploitation with low complexity, no privileges required, and user interaction required, with potential low confidentiality and high integrity and availability impact.
An important-severity heap out-of-bounds write in exiv2's RemoteIo functionality when WebReady/Curl-enabled builds read data from a malicious remote server. It has a CVSS v3.1 score of 8.3 and requires user interaction.
A critical, network-reachable vulnerability affecting Debian Linux 12.0, 13.0, and 14.0. The supplied CVSS vector indicates unauthenticated remote exploitation with no user interaction and complete confidentiality, integrity, and availability impact. The content does not identify the affected component beyond the Debian/exiv2 CPE association.
An out-of-bounds write vulnerability in Exiv2's RemoteIo::Impl::populateBlocks function, reachable when Exiv2 processes a URL rather than a local file.
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.