CVE•Published 2026-06-25•Modified 2026-07-14•1 article on news•5 live references•NVD data
CVE-2026-56786Rtklib · Rtklib
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
34
Exploit Prediction Scoring System · top 66% of all CVEs
Weaknesses (CWE)
Description
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 attacker controlling an NTRIP or serial RTCM3 correction stream can craft a valid CRC-bearing type-1033 message to corrupt adjacent rtcm_t object members, potentially achieving arbitrary code execution or denial of service.
Timeline
Published 2026-06-25
Modified 2026-07-14
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-56786Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Rtklib Rtklib"All exposed Rtklib Rtklib instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Rtklib"HTTP body or banner mentions "Rtklib" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-56786Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-56786Censys host search filtered to this CVE id.
grep.app
CVE-2026-56786Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-56786GitHub code search for direct mentions.
Google dork
"CVE-2026-56786" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-56786 on GitHub.