CVE-2026-56789 - RTKLIB 2.4.3 - Heap Buffer Overflow and Stack Read via Oversized RINEX Epoch Satellite Count

CVE-2026-56789 - RTKLIB 2.4.3 - Heap Buffer Overflow and Stack Read via Oversized RINEX Epoch Satellite Count

https://cvefeed.io/rssfeed/latest.atom / Thu, 06/25/2026 - 22:01
CVE ID :CVE-2026-56789
Published : June 25, 2026, 6:14 p.m. | 27 minutes ago
Description :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.
Severity: 7.1 | HIGH
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