Product Launchgnupggpg4wincryptographybuffer overflow
GnuPG Releases Patch Fixing Remote RCE
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9.3
GnuPG released version 2.5.17 on January 27, 2026 to address a stack buffer overflow in gpg-agent PKDECRYPT (KEM) that can enable remote code execution. The flaw, tracked as T8044 and reported by OpenAI Security Research on January 18, affects GnuPG 2.5.13–2.5.16 and several Gpg4win 5.0.0 builds; Gpg4win 5.0.1 also includes the fix. Users should update immediately or remove gpgsm to mitigate risk.
Scoring Rationale
High urgency and official fix by upstream; limited scope to specific GnuPG/Gpg4win 2.5.x and 5.0.0 builds.
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