CVE-2026-56786 - RTKLIB 2.4.3 - Out-of-bounds Write in decode_type1033 via Crafted RTCM3 Message

CVE-2026-56786 - RTKLIB 2.4.3 - Out-of-bounds Write in decode_type1033 via Crafted RTCM3 Message

https://cvefeed.io/rssfeed/latest.atom / Thu, 06/25/2026 - 22:01
CVE ID :CVE-2026-56786
Published : June 25, 2026, 6:11 p.m. | 29 minutes ago
Description :RTKLIB through 2.4.3 contains an out-of-bounds write vulnerability in decode_type1033 function that fails to clamp length counters to destination buffer size, allowing up to 191-byte overflow into fixed 64-byte descriptor fields. An attacker controlling an NTRIP or serial RTCM3 correction stream can craft a valid CRC-bearing type-1033 message to corrupt adjacent rtcm_t object members, potentially achieving arbitrary code execution or denial of service.
Severity: 9.8 | CRITICAL
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