Is CVE-2026-9149 in the CISA KEV catalog?

No. CVE-2026-9149 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-9149?

CVE-2026-9149 has a CVSS v3 base score of 6.5 (Moderate).

What is the EPSS score for CVE-2026-9149?

CVE-2026-9149 has an EPSS score of 0.29% (21th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-9149?

Upgrade libsolv on debian unstable to 0.7.38-1 or later. Fixes are available for 27 affected products.

CVE & CISA-KEV Catalog

CVE-2026-9149

MEDIUM

6.5

CVSS v3

NVD

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).

CWE-122Heap-based Buffer Overflow

How to fix

Remediation Available

libsolvDebian

Fixed in:0.7.38-1CVE-2026-9149

libsolvRocky

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

libsolvRed Hat / RHEL

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

libsolv-debuginfoRocky

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

libsolv-debuginfoRed Hat / RHEL

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

libsolv-debugsourceRocky

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

libsolv-debugsourceRed Hat / RHEL

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

libsolv-demo-debuginfoRocky

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

libsolv-demo-debuginfoRed Hat / RHEL

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

libsolv-develRocky

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

libsolv-develRed Hat / RHEL

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

libsolv-toolsRed Hat / RHEL

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

libsolv-toolsRocky

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

libsolv-tools-baseRed Hat / RHEL

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

libsolv-tools-baseRocky

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

libsolv-tools-base-debuginfoRed Hat / RHEL

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

libsolv-tools-base-debuginfoRocky

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

libsolv-tools-debuginfoRocky

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

libsolv-tools-debuginfoRed Hat / RHEL

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

perl-solv-debuginfoRed Hat / RHEL

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

perl-solv-debuginfoRocky

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

python3-solvRocky

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

python3-solvRed Hat / RHEL

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

python3-solv-debuginfoRocky

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

python3-solv-debuginfoRed Hat / RHEL

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

ruby-solv-debuginfoRocky

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

ruby-solv-debuginfoRed Hat / RHEL

Fixed in:0:0.7.33-5.el10_2RHSA-2026:28236

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U

Exploit Intelligence

0.29%probability of exploitation in 30 days

21stpercentile

Low risk: more likely to be exploited than 21% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory2

Other references2

Related Vulnerabilities

Other CWE-122 (Heap-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2024-26256	High	7.8	88%	-	Fix
CVE-2020-25687	Medium	5.9	87%	-	Fix
CVE-2009-3459	High	8.8	86%	KEV	Fix
CVE-2021-21017	High	8.8	86%	KEV	-
CVE-2020-25683	Medium	5.9	86%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-27.