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Fencer Vulns
low 2.0

CVE-2026-120740 json

Hivex: hivex: denial of service via out-of-bounds read in big-data block processing

published 2026-11-02 6 d ago modified 2026-11-07 2 d ago also EUVD-2026-115639

cvss
2.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits
0
none known

Summary

A flaw was found in hivex. By supplying a specially crafted Windows registry hive file, an attacker can trigger an out-of-bounds memory read when hivex parses registry values containing malformed large data block lists. This issue can cause the application processing the registry file to crash, resulting in a Denial of Service (DoS).

Patch / fix

  • hivex openSUSE Tumbleweed 1.3.24-4.1

opensuse advisories openSUSE-SU-2026:12458-1

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-2026-120740 updated cvss 2.0

hivex: hivex: Denial of Service via out-of-bounds read in big-data block processing

  • Red Hat Enterprise Linux 6 hivex, perl-hivex, ocaml-hivex, python-hivex Red Hat Enterprise Linux 7 hivex, perl-hivex, ruby-hivex, ocaml-hivex, python-hivex Red Hat Enterprise Linux 8 hivex, perl-hivex, ruby-hivex, ocaml-hivex, python3-hivex Red Hat Enterprise Linux 9 hivex, hivex-libs, perl-hivex, ruby-hivex, ocaml-hivex, python3-hivex Red Hat Enterprise Linux 10 hivex
    affected: no fix available “Fix deferred”

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 SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 d ago

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 2.0 CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness

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.