2.9

CVE-2026-0992: ibm aix Uncontrolled Resource Consumption

CVSS: 2.9v3.1LowAnalyzed
AliasesUBUNTU-CVE-2026-0992DEBIAN-CVE-2026-0992
Published 15-01-2026Last modified 01-09-2026
Open JSON

Vulnerability summary

CVE-2026-0992 is a low (CVSS 2.9) Uncontrolled Resource Consumption vulnerability in ibm aix. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 38.3% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
2.9/10
010
Low · v3.1 (CVE.org)
EPSS score
0.46%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 13 · Related 12
MGASA-2026-0027OPENSUSE-SU-2026:10213-1OPENSUSE-SU-2026:20312-1RHSA-2026:7519SUSE-SU-2026:0568-1SUSE-SU-2026:0570-1

Timeline

  1. 15-01-2026
    PublishedVulnerability first disclosed.
  2. 01-09-2026
    Last modifiedVulnerability information updated.

Description

A flaw was found in the libxml2 library. This uncontrolled resource consumption vulnerability occurs when processing XML catalogs that contain repeated <nextCatalog> elements pointing to the same downstream catalog. A remote attacker can exploit this by supplying crafted catalogs, causing the parser to redundantly traverse catalog chains. This leads to excessive CPU consumption and degrades application availability, resulting in a denial-of-service condition.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.46%

Chance of exploitation in the next 30 days

Percentile

38%

Versus all other CVEs

30-day change

-0.01 pp

From 0.46% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.46%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (gitlab.gnome.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Redhat4 products
Ibm2 products
  • aix≥ 7.2.5, < 7.2.5.12 | ≥ 7.3.2, < 7.3.3.3 | 7.3.4
  • vios≥ 4.1.0, < 4.1.1.30 | 4.1.2.0
Debian1 product
  • libxml2< 2.9.14+dfsg-1.3~deb12u6 | < 2.12.7+dfsg+really2.9.14-2.1+deb13u3 | < 2.15.2+dfsg-0.1
Ubuntu1 product
  • libxml2< 2.9.1+dfsg1-3ubuntu4.13+esm11 | < 2.9.3+dfsg1-1ubuntu0.7+esm12 | < 2.9.4+dfsg1-6.1ubuntu1.9+esm7 | < 2.9.10+dfsg-5ubuntu0.20.04.10+esm4 | < 2.9.13+dfsg-1ubuntu0.11 | < 2.9.14+dfsg-1.3ubuntu3.7 | < 2.14.5+dfsg-0.2ubuntu0.1
Xmlsoft1 product

5 vendors · 9 products

References

9 links