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CVE-2026-56786

9.3 critical SSVC exploitation: poc Analyzed
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 1

  1. First seenCVSS 9.3 · rtklibNVD modified 2026-10-25 22:10

Affected (CPE criteria) 1

  • cpe:2.3:a:rtklib:rtklib:*:*:*:*:*:*:*:*

References 2