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CVE-2025-12818 is an integer-wraparound flaw in PostgreSQL's libpq client library. PQescapeInternal, which underlies PQescapeLiteral and PQescapeIdentifier, uses signed integer counters while counting quote and backslash characters in caller-controlled input. An extremely large input containing sufficient quote or backslash characters can overflow these counters, causing an undersized output-buffer allocation followed by out-of-bounds writes during construction of the escaped string. PostgreSQL versions earlier than 18.1, 17.7, 16.11, 15.15, 14.20, and 13.23 are affected.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
28 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Specific vulnerability referenced as affecting VMware Photon OS 5.0 PostgreSQL 15 package; exploit availability is indicated, but no technical details are provided in the content.
Integer overflow in PostgreSQL libpq’s PQescapeInternal leading to incorrect buffer size calculation, heap buffer overflow/out-of-bounds write and resulting crash (segmentation fault), demonstrated as reachable via PHP’s pdo_pgsql escapeIdentifier path.
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.