Security readout for executives and security teams
Plain-English summary
CVE-2026-0961 is a Wireshark crash issue triggered when parsing BLF files. An attacker would need someone to open a malicious or malformed BLF file. The business impact is availability disruption to analyst workstations or packet-analysis workflows, not data theft based on the provided sources.
Executive priority
Treat as a routine but timely workstation update for teams using Wireshark. Prioritize groups handling externally supplied BLF files. This is not currently evidenced as a remote compromise or data-loss issue.
Technical view
Wireshark 4.6.0 through 4.6.2 and 4.4.0 through 4.4.12 are reported affected. The issue is an out-of-bounds write in the BLF file parser, classified as CWE-787. CVSS 3.1 is 5.5 with local attack vector, no privileges, user interaction required, and high availability impact only.
Likely exposure
Exposure is mainly among users who analyze BLF files in Wireshark, especially security, network, automotive, or incident-response teams receiving files from external parties.
Exploitation context
The provided sources do not show active exploitation, and this CVE is not marked KEV. Exploitation requires a user to open a crafted BLF file locally. Impact is described as denial of service through a Wireshark crash.
Researcher notes
Public details are limited. The GitLab issue is listed as permissions-required in the source bundle. Do not assume code execution from the out-of-bounds write; the stated impact is BLF parser crash and denial of service.
Mitigation direction
- Check the Wireshark security advisory for fixed release guidance.
- Upgrade Wireshark to a version outside the affected ranges.
- Avoid opening BLF files from untrusted sources.
- Analyze suspicious BLF files only in isolated environments.
- Restrict file association or default opening of BLF files where practical.
Validation and detection
- Inventory Wireshark versions across analyst and engineering systems.
- Flag installations in 4.6.0-4.6.2 or 4.4.0-4.4.12.
- Confirm users who handle BLF files have upgraded.
- Review help-about or package data to verify installed versions.
- Monitor the Wireshark advisory for updated remediation details.
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-787: 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 lookupCVE-2026-0961 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
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
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.
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:N/UI:R/S:U/C:N/I:N/A:H1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wireshark.org/security/wnpa-sec-2026-01.htmlCVE reference
- GitLab Issue #20880CVE reference · issue-tracking, permissions-required
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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.