---
cve: "CVE-2026-115504"
severity: "HIGH"
cvss: 8.5
epss: ""
vendor: "HEASARC"
kev: false
exploited: false
published: "2026-10-22 20:17:06"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-27T05:34:56+01:00"
---

# CVE-2026-115504

> 8.5 HIGH · 🧪 PoC

## Beschreibung

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.

## CNA-Record (Kanon, cvelistV5)

- CNA: **VulnCheck**
- State: PUBLISHED
- Stand: 2026-10-22 19:14:04
- CNA-CVSS: **8.5** (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |

## Schwachstellen-Klasse

- **CWE-787** — Out-of-bounds Write
  The product writes data past the end, or before the beginning, of the intended buffer.

## Patch verfügbar (OSV)

- 579792e0f85bff0c6733ad5ebdf54c3b5c188686 (Commit)

## Referenzen

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

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-115504/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_