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.

CVSS 4.0

4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS 3.1

3.3CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

EPSS

0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-25)

CWE

CWE-125

Published

2026-10-14

Modified

2026-10-16

Record from

the NVD, synced 2026-10-19

References

• https://github.com/CGNS/CGNS
• https://github.com/CGNS/CGNS/blob/3a972d92559787a49c5f9a54974ea1946ecb9d21/src/adf/ADF_internals.c#L6828
• https://hackmd.io/@haind-pwn/cgns-adf-node-header-oob-read
• https://www.vulncheck.com/advisories/cgns-through-4.5.2-stack-out-of-bounds-read-via-adfi-read-node-header

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