CVE-2026-56788
RTKLIB 2.4.3 - Out-of-bounds Read via Negative Array Index in getcodepri
CVSS Score
4.4
EPSS Score
0.0%
EPSS Percentile
0th
RTKLIB through 2.4.3 contains an out-of-bounds read vulnerability in getcodepri function when processing unrecognized RINEX observation codes, allowing attackers to trigger denial of service. Crafted RINEX files with unknown observation types cause negative array indexing into the codepris table, resulting in reliable crashes and potential memory disclosure of adjacent global data.
| CWE | CWE-125 |
| Vendor | tomojitakasu |
| Product | rtklib |
| Published | Jun 25, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low
Affected Versions
tomojitakasu / RTKLIB
0 ≤ 2.4.3
References
Credits
FuzzingLabs