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CVE-2026-9149

Affected software4 products, listed below
Severity6.5 Medium CVSS 3.1 2 scores
WeaknessCWE-122
Published21 May 2026
Updated6 Nov 2026

Description

A flaw was found in libsolv. This heap buffer overflow vulnerability occurs when a victim processes a specially crafted .solv file containing negative size values in the repo_add_solv function. This leads to an undersized memory allocation and a subsequent out-of-bounds write. An attacker could exploit this to cause a denial of service (DoS).

Exploitation status

Proof of concept only

A proof of concept exists, but no reviewed exploit catalogue lists this CVE.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: poc CISA recorded that an exploit has been demonstrated. Automatable: no, technical impact: partial.
  • Indexed PoC none indexed
  • EPSS 0.31% chance in 30 days

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

  • Protection none
  • Action not pursued none
  • Review automated Upstream data
  • Record active
Decided by The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached
Finding This CVE names only products the Waratek agent cannot be installed into (redhat/satellite). They ship as sealed appliance images or as native code with no application JVM, so there is no start-up line to add -javaagent to. The vulnerability may well be a Java one; it is permanently out of ARMR's reach rather than outside its subject.

CVSS

6.5 MEDIUM v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 6.5 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H secalert@redhat.com Secondary published
CVSS 3.1 6.5 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H NVD Primary

Affected software and releases

Products and versions

6 products, 9 version entries
SourceVendorProductSchemeAffected versions
nvd opensuse libsolv generic ≤ 0.7.36
nvd redhat enterprise linux generic 7.0 · 8.0 · 9.0 · 10.0
nvd redhat hardened images generic any version
nvd redhat openshift container platform generic 4.0
nvd redhat satellite generic 6.0
nvd redhat update infrastructure generic 4

References

URLTags
https://access.redhat.com/errata/RHSA-2026:21333
https://access.redhat.com/errata/RHSA-2026:28236
https://access.redhat.com/errata/RHSA-2026:48818
https://access.redhat.com/security/cve/CVE-2026-9149 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2460380 Issue Tracking, Third Party Advisory
https://github.com/openSUSE/libsolv/pull/617 Issue Tracking, Patch

Timeline

Published2026-05-21By the CVE Program.
NVD record modified2026-11-06NVD's own last-modified date for this record.