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CVE-2026-56789

7.1 high SSVC exploitation: poc Analyzed
NVD · CVE.org

RTKLIB through 2.4.3 contains a heap buffer overflow vulnerability in the readrnxobsb function in src/rinex.c that allows attackers to trigger memory corruption by failing to clamp satellite count values from RINEX epoch headers. Attackers can craft malicious RINEX files declaring more than 64 satellites per epoch to cause heap buffer overflow writes and out-of-bounds stack reads, crashing RTKLIB-based applications including rnx2rtkp and RTKPOST.

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 7.1 · rtklibNVD modified 2026-10-25 22:10

Affected (CPE criteria) 1

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

References 2