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TI-2021-17627 Aliases CVE-2021-40648GHSA-x62g-3vp2-7m3v

In man2html 1.6g, a filename can be created to overwrite the previous size parameter of…

Priority LOW 25CWE-20Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

In man2html 1.6g, a filename can be created to overwrite the previous size parameter of the next chunk and the fd, bk, fd_nextsize, bk_nextsize of the current chunk. The next chunk is then freed later on, causing a freeing of an arbitrary amount of memory.

Why it matters now

EPSS 0.00342 27th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:man2html_project:man2html:1.6g:*:*:*:*:*:*:*1.6gVulnerableMan2html Project
  • cpe:2.3:a:man2html_project:man2html:1.6g:*:*:*:*:*:*:* Versions 1.6g Vulnerable ·Man2html Project

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-40648
  2. 2026-10-03 Alias added: GHSA-x62g-3vp2-7m3v

References

Exploit 1

  • TI-2021-17626 In man2html 1.6g, a specific string being read in from a file will overwrite the size… CVSS 3.1MEDIUM 5.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences