CVE-2026-115504

CVSS 8.5 (high) · published 2026-10-22

CFITSIO through 4.7.0 contains an out-of-bounds write vulnerability in ffgcls2() in getcols.c that trusts attacker-controlled heap descriptor lengths for variable-length string columns. Attackers can supply a crafted FITS file that overflows a fixed 28,800-byte stack buffer and the caller's string array, enabling arbitrary code execution.

Weakness: CWE-787

Source: NVD CVE-2026-115504

References

• https://gist.github.com/yure1432/98f15c7e8f48dc90ae65646f926aa176
• https://github.com/HEASARC/cfitsio
• https://github.com/HEASARC/cfitsio/commit/579792e0f85bff0c6733ad5ebdf54c3b5c188686
• https://github.com/HEASARC/cfitsio/pull/184
• https://www.vulncheck.com/advisories/cfitsio-through-4.7.0-out-of-bounds-write-via-ffgcls2-in-getcols-c

Check your software

Connect an AI agent to the FixLane MCP server or ask the Telegram bot to check what you have installed against incidents with a verified fixed version.