Security readout for executives and security teams
Plain-English summary
Libarchive can mishandle a specially crafted WARC archive and overflow an integer while reading it. The likely business impact is localized: applications or systems that process untrusted WARC files may crash, behave unpredictably, or expose limited data. The published severity is low.
Executive priority
Treat this as a routine remediation item unless your organization processes untrusted WARC archives at scale. Prioritize affected ingestion systems, archive-processing services, and shared container images, but this does not appear to require emergency response based on the provided evidence.
Technical view
CVE-2025-5916 is a CWE-190 integer overflow in libarchive's WARC reader, triggered by a WARC file claiming more than INT64_MAX - 4 content bytes. Sources describe possible unpredictable behavior, memory corruption, denial of service, and limited confidentiality impact. Libarchive versions before 3.8.0 are affected.
Likely exposure
Exposure is most likely where libarchive processes WARC files from users, partners, crawlers, archives, or automated ingestion pipelines. The bundle lists RHEL 8, 9, 10 and OpenShift Container Platform 4 as affected; RHEL 6 and 7 status is unknown.
Exploitation context
The CVSS vector requires local access, low complexity, low privileges, and user interaction. The source bundle does not show CISA KEV listing or other evidence of active exploitation, so active exploitation should not be assumed.
Researcher notes
Key boundaries are clear: WARC parsing, integer overflow, versions before 3.8.0, and Red Hat affected-product status. Evidence is incomplete for exploit-in-the-wild activity and for final fixed package availability across every listed Red Hat platform.
Mitigation direction
- Upgrade libarchive to version 3.8.0 or a vendor-fixed package when available.
- Follow Red Hat guidance for affected RHEL and OpenShift packages.
- Limit or isolate processing of untrusted WARC files until patched.
- Review container base images and embedded dependencies for vulnerable libarchive versions.
- Track RHEL 6 and 7 status if those platforms remain in use.
Validation and detection
- Inventory systems, containers, and applications that include libarchive.
- Check whether any workflows ingest or unpack WARC files.
- Confirm installed libarchive versions are 3.8.0 or vendor-fixed builds.
- Review SBOMs for transitive or embedded libarchive copies.
- Verify Red Hat package status for each affected operating environment.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-190: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupContainer behavior lookup
The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2025-5916 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Low
- CVSS
- 3.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L1.32.5redhatVulnerability scoring details
Base CVSS 3.1 score
3.9LowVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- Source timelineredhat
Made public.
- Source timelineredhat
Reported to Red Hat.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://access.redhat.com/security/cve/CVE-2025-5916CVE reference, redhat · vdb-entry, x_refsource_REDHAT
- RHBZ#2370872CVE reference, redhat · issue-tracking, x_refsource_REDHAT
- https://github.com/libarchive/libarchive/pull/2568CVE reference, redhat
- https://github.com/libarchive/libarchive/releases/tag/v3.8.0CVE reference, redhat
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.