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 (CVSS)
| Base score | 7.1 |
|---|---|
| Severity | High |
| Version | CVSS 4.0 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| Provided by | CNA |
Weaknesses
- CWE-122 — Heap-based Buffer Overflow
Affected products
| Vendor | Product | Versions |
|---|---|---|
| tomojitakasu | RTKLIB | 0 to <=2.4.3 |
References
- https://github.com/tomojitakasu/RTKLIB/issues/796 (technical-description exploit)
- https://www.vulncheck.com/advisories/rtklib-heap-buffer-overflow-and-stack-read-via-oversized-rinex-epoch-satellite-count (third-party-advisory)
Generated from the official CVE List on 26 Jun 2026 07:05 UTC.