Vulnerability · Published Oct 14, 2026 · Assigned by VulnCheck
CVE-2026-110661CGNS through 4.5.2 Stack Out-of-Bounds Read via ADFI_read_node_header
Low 3.3
In plain English
A low-severity out-of-bounds read in CGNS from CGNS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).
Severity (CVSS 3.1)3.3Low
Exploit odds (30 days)0.2%top 94.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | libcgns | no fix listed | UBUNTU-CVE-2026-110661 |
| Ubuntu:24.04:LTS | libcgns | no fix listed | UBUNTU-CVE-2026-110661 |
| Ubuntu:26.04:LTS | libcgns | no fix listed | UBUNTU-CVE-2026-110661 |
| Ubuntu:26.10 | libcgns | no fix listed | UBUNTU-CVE-2026-110661 |
Affected products (as reported)
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
References
- https://hackmd.io/@haind-pwn/cgns-adf-node-header-oob-read technical-description, exploit
- https://github.com/CGNS/CGNS/blob/3a972d92559787a49c5f9a54974ea1946ecb9d21/src/adf/ADF_internals.c#L6828 technical-description
- https://github.com/CGNS/CGNS product
- VulnCheck Advisory: CGNS through 4.5.2 Stack Out-of-Bounds Read via ADFI_read_node_header third-party-advisory