CVE-2026-111124

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-111124
CFITSIO through 4.7.0 contains a heap-based out-of-bounds read vulnerability in the imcompress.c unquantize helpers that allows attackers to read memory before the fits_rand_value table via a zero or negative ZDITHER0 seed. Attackers can supply a crafted FITS file with a SUBTRACTIVE_DITHER_1 compressed image, read through fits_open_file() and fits_read_pix(), to cause crashes or leak heap contents in decoded pixels.

6.1 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 4.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/HEASARC/cfitsio Product
https://github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/imcompress.c#L5353-L5362 Product
https://github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/imcompress.c#L7495-L7516 Product
https://hackmd.io/@haind-pwn/cfitsio-zdither0-dither-seed-oob-read Exploit Mitigation Vendor Advisory
https://www.vulncheck.com/advisories/cfitsio-through-4.7.0-heap-out-of-bounds-read-via-negative-zdither0-seed Third Party Advisory
https://hackmd.io/@haind-pwn/cfitsio-zdither0-dither-seed-oob-read Exploit Mitigation Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:nasa:cfitsio:*:*:*:*:*:*:*:*
History

26 Oct 2026, 16:17

Type Values Removed Values Added
References () https://hackmd.io/@haind-pwn/cfitsio-zdither0-dither-seed-oob-read - Exploit, Mitigation, Vendor Advisory () https://hackmd.io/@haind-pwn/cfitsio-zdither0-dither-seed-oob-read - Exploit, Mitigation, Vendor Advisory

20 Oct 2026, 15:39

Type Values Removed Values Added
First Time Nasa
Nasa cfitsio
CPE cpe:2.3:a:nasa:cfitsio:*:*:*:*:*:*:*:*
References () https://github.com/HEASARC/cfitsio - () https://github.com/HEASARC/cfitsio - Product
References () https://github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/imcompress.c#L5353-L5362 - () https://github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/imcompress.c#L5353-L5362 - Product
References () https://github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/imcompress.c#L7495-L7516 - () https://github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/imcompress.c#L7495-L7516 - Product
References () https://hackmd.io/@haind-pwn/cfitsio-zdither0-dither-seed-oob-read - () https://hackmd.io/@haind-pwn/cfitsio-zdither0-dither-seed-oob-read - Exploit, Mitigation, Vendor Advisory
References () https://www.vulncheck.com/advisories/cfitsio-through-4.7.0-heap-out-of-bounds-read-via-negative-zdither0-seed - () https://www.vulncheck.com/advisories/cfitsio-through-4.7.0-heap-out-of-bounds-read-via-negative-zdither0-seed - Third Party Advisory

15 Oct 2026, 19:17

Type Values Removed Values Added
New CVE
Information

Published : 2026-10-15 19:17

Updated : 2026-10-26 16:17

NVD link : CVE-2026-111124

Mitre link : CVE-2026-111124

CVE.ORG link : CVE-2026-111124

JSON object : View

Products Affected

nasa

  • cfitsio
CWE
CWE-125

Out-of-bounds Read