Buffer overflow in Tomojitakasu Rtklib
CVE-2026-56786
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 attack…
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Tomojitakasu Rtklib — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (technical-description, exploit)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56786?
- CVE-2026-56786 is a critical-severity vulnerability in Tomojitakasu Rtklib, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2026-06-25.
- How severe is CVE-2026-56786?
- Critical severity. CVSS v3 base score is 9.8 out of 10.