7.1

CVE-2026-111124: heasarc cfitsio Out-of-bounds Read

CVSS: 7.1v3.1HighAnalyzed
AliasesDEBIAN-CVE-2026-111124UBUNTU-CVE-2026-111124
Published 15-10-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-111124 is a high (CVSS 7.1) Out-of-bounds Read vulnerability in heasarc cfitsio. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.2% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
38/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v3.1 (NVD)
EPSS score
0.13%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 15-10-2026
    PublishedVulnerability first disclosed.

Description

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.

CVSS metrics

7 scores · 4 sources · 2 versions

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

16-10-202620-10-2026
EPSS score
0.13%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (hackmd.io)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • cfitsioAll versions (No fix recorded)
Heasarc1 product
Nasa1 product
Ubuntu1 product
  • cfitsioAll versions (No fix recorded)

4 vendors · 4 products

References

8 links