CVE-2026-19874: Metal Gear Online 3 RCE Flaw
ID: 21b760c3-6b29-5ec7-89f0-654a492faecc
STIX ID: report--21b760c3-6b29-5ec7-89f0-654a492faecc
Feed Name: securityonline.info
Threat Score
Konami patched a critical remote code execution vulnerability in Metal Gear Online 3 (CVE-2026-19874) caused by a heap-based buffer overflow in lobby metadata that can allow a malicious host to hijack joining clients and propagate the exploit across an active lobby; the flaw affected version 1.1.2.8 and was fixed in 1.1.2.9, and no confirmed exploitation has been reported — users should update via Steam.
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