A flaw was found in libsolv. This heap buffer overflow occurs during the decompression of attacker-controlled compressed data within .solv files due… (CVE-2026-48864)
Description
A flaw was found in libsolv. This heap buffer overflow occurs during the decompression of attacker-controlled compressed data within `.solv` files due to insufficient input validation. An attacker can provide a specially crafted `.solv` file, which, when processed by a vulnerable application, can lead to out-of-bounds memory access. This could result in information disclosure, alteration of program execution, or a denial of service.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The libsolv package, which provides a library for resolving package dependencies using a satisfiability algorithm, contains a heap buffer overflow vulnerability (CVE-2026-48864). This occurs in the repopagestore component due to unchecked decompression of malicious .solv page data. Red Hat has issued a security advisory (RHSA-2026:36730) for Red Hat Enterprise Linux 8 and related products, rating the impact as moderate. The advisory includes updated libsolv packages that address this vulnerability.
Potential Impact
Successful exploitation of this heap buffer overflow could lead to high impact on confidentiality, integrity, and availability as indicated by the CVSS vector (Confidentiality: High, Integrity: High, Availability: High). However, the vulnerability requires local access with low privileges and user interaction. There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated libsolv packages for Red Hat Enterprise Linux 8 and related products that fix this vulnerability. Users should apply the available security update as described in the Red Hat advisory RHSA-2026:36730 and the referenced update article (https://access.redhat.com/articles/11258). No additional mitigations are specified or required beyond applying the official patch.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:21333
- Cve Count
- 1
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a3c0cf3eed863c81e239d17
Added to database: 06/24/2026, 16:59:31 UTC
Last enriched: 07/31/2026, 01:09:08 UTC
Last updated: 10/07/2026, 18:48:20 UTC
Views: 128
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.