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Fencer Vulns
high 7.8

CVE-2023-31102 in the critical feed json

Ppmd7.c in 7-Zip before 23.00 allows an integer underflow and invalid read operation via a crafted 7Z archive.

published 2023-11-03 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-35429

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
54.0%
EPSS 54.0% chance of exploitation in 30 days, percentile 99%
public exploits
0
none known

Summary

Ppmd7.c in 7-Zip before 23.00 allows an integer underflow and invalid read operation via a crafted 7Z archive.

Patch / fix

  • 7-zip 7-zip 22.01
  • 7zip Debian 12 22.01+really25.01+dfsg-0+deb12u1
  • 7zip Debian 14, Debian 13 23.01+dfsg-1
  • p7zip Debian 12 16.02+really25.01+dfsg-0+deb12u1
  • p7zip Debian 13 16.02+transitional.1

debian advisories DEBIAN-CVE-2023-31102

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-31102 updated cvss 7.8

p7zip: 7Z File Parsing Integer Underflow Remote Code Execution Vulnerability

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-24-256-20 updated cvss 7.8

Rockwell Automation AADvance Trusted SIS Workstation

  • Rockwell Automation AADvance Trusted SIS Workstation <=2.00.01
    affected: fixed in 2.00.02, mitigation “Rockwell Automation offers users the following solutions:” rockwellautomation.custhelp.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

53.99% chance of exploitation in the next 30 days, higher than 99% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Classification

Weakness
  • CWE-191 Integer Underflow (Wrap or Wraparound)

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.