Out-of-bounds Read in Cgns
CVE-2026-110661
CGNS through 4.5.2 contains a stack out-of-bounds read vulnerability in ADFI_read_node_header that allows attackers to crash applications by supplying crafted ADF node headers. Attackers can craft .cgns or .adf files whose non-NUL-terminated end tag causes ADFI_stridx_c to scan past disk_node_data, crashing tools like cgnslist.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind-pwn/cgns-adf-node-header-oob-read (technical-description, exploit)
- github.com/CGNS/CGNS/blob/3a972d92559787a49c5f9a54974ea1946ecb9d21/src/adf/ADF_… (technical-description)
- github.com/CGNS/CGNS (product)
- www.vulncheck.com/advisories/cgns-through-4.5.2-stack-out-of-bounds-read-via-ad… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-110661?
- CVE-2026-110661 is a low-severity vulnerability in Cgns, classified under Out-of-bounds Read. CVSS score: 3.3/10. Published 2026-10-14.
- How severe is CVE-2026-110661?
- Low severity. CVSS v3 base score is 3.3 out of 10.