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CVE PROGRAM SOURCE RECORD7.1 High

CVE-2026-56789

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

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Status
Published
Published
Updated
Assigning organization
VulnCheck

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

tomojitakasu RTKLIB

Default version status: unaffected

  • 0 to ≤ 2.4.3affected
pkg:github/tomojitakasu/RTKLIB

References