PT-2026-52550 · Tomojitakasu · Rtklib

Fuzzinglabs · Published 2026-06-25 · Updated 2026-06-25 · CVE-2026-56787

NVD

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

RTKLIB through 2.4.3 contains an off-by-one out-of-bounds read vulnerability in the decode ssr3 function at src/rtcm3.c:1446 that allows remote attackers to trigger a global buffer overflow via crafted RTCM3 SSR messages with attacker-controlled signal mode fields. Remote attackers can exploit this vulnerability by sending malicious SSR correction streams over NTRIP or serial connections to cause denial of service or crash RTKLIB rovers and CORS servers.

Exploit

Fix

Weakness Enumeration

CWE-193

Related Identifiers

CVE-2026-56787

Affected Products

Rtklib

References · 3

• 🔥 https://github.com/tomojitakasu/RTKLIB/issues/798 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-56787 · Security Note
• https://vulncheck.com/advisories/rtklib-off-by-one-out-of-bounds-read-in-decode-ssr3-via-rtcm3-ssr-message · Note