6.9

CVE-2026-111126: catdoc Out-of-bounds Read

CVSS: 6.9v4.0MediumDeferred
AliasesDEBIAN-CVE-2026-111126UBUNTU-CVE-2026-111126
Published 15-10-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-111126 is a medium (CVSS 6.9) Out-of-bounds Read vulnerability in catdoc. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9.3% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.9/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.20%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 15-10-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

catdoc through 0.95 contains an out-of-bounds read vulnerability in the MULRK record handler of process_item() in src/xlsparse.c that allows attackers to read past the static rec buffer via a crafted end column. Attackers can supply a crafted .xls workbook or BIFF stream with a large endcol to xls2csv to disclose adjacent process memory as CSV cells or crash the process.

CVSS metrics

7 scores · 4 sources · 2 versions

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

16-10-202621-10-2026
EPSS score
0.20%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Catdoc1 product
Debian1 product
  • catdocAll versions (No fix recorded)
Ubuntu1 product
  • catdocAll versions (No fix recorded)

3 vendors · 3 products

References

7 links