CVE-2026-129135

CVSS 6.3 (medium) · published 2026-11-13

picoquic before 2026.11.05.3e2e3d3 contains an integer overflow vulnerability in picoquic_decode_time_stamp_frame() that allows remote QUIC peers to corrupt stored timestamps by sending oversized TIME_STAMP values. Attackers on connections negotiating the TIME_STAMP extension can send large values shifted by ack_delay_exponent to wrap the result, corrupting RTT and bandwidth estimation and degrading congestion control.

Weakness: CWE-190

Source: NVD CVE-2026-129135

References

• https://github.com/private-octopus/picoquic
• https://github.com/private-octopus/picoquic/blob/7966b3f6a5f1dc08a844b3bfa0b22b0f8d424736/picoquic/frames.c#L5651
• https://github.com/private-octopus/picoquic/commit/ef21278928771a1ace1c6764cf0e5300d61f7d94
• https://github.com/private-octopus/picoquic/issues/2365
• https://github.com/private-octopus/picoquic/pull/2343
• https://github.com/private-octopus/picoquic/releases/tag/v2026.11.05.3e2e3d3
• https://www.vulncheck.com/advisories/picoquic-before-2026.11.05-3e2e3d3-integer-overflow-via-time-stamp-frame-decoder

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