Raw vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2026-7376 is a medium-severity NULL Pointer Dereference (CWE-476) vulnerability in Wireshark Wireshark. Its CVSS base score is 5.5 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Endpoint Denial of Service (T1499); ranked at the 9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SA-15 (Development Process, Standards, and Tools) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2026-7376 is a vulnerability affecting the sharkd component in Wireshark versions 4.6.0 through 4.6.4 and 4.4.0 through 4.4.14. It stems from a NULL pointer dereference (CWE-476) that causes a crash, enabling a denial of service condition. The CVSS v3.1 base score is 5.5 (AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H), indicating medium severity with high availability impact.
A local attacker can exploit this vulnerability under low attack complexity with no privileges required, but user interaction is necessary. Exploitation triggers a crash in the sharkd process, resulting in denial of service through high availability disruption, with no impacts on confidentiality or integrity.
Wireshark security advisory WNPA-sec-2026-48 provides details on the issue at https://www.wireshark.org/security/wnpa-sec-2026-48.html. Further discussion and resolution tracking are available in the Wireshark GitLab work item at https://gitlab.com/wireshark/wireshark/-/work_items/21206. Security practitioners should review these resources for patch availability and mitigation guidance.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-26311
Vulnerability Data
Crash in sharkd 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and evaluation (including static analysis) directly finds null-dereference bugs before deployment.
Documented development standards and tools can enforce null-safety rules and safe pointer usage.
Engineering principles can mandate defensive coding such as explicit null checks before dereference.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure SDLC practices (static analysis, code review, safe coding standards) directly prevent NULL dereference bugs during development.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing can detect NULL dereference defects before release.
Secure SDLC mandates defensive coding practices that can prevent NULL dereferences.
Application security requirements can specify input validation and pointer-safety rules.
Secure architecture principles encourage defensive design that avoids unsafe pointer use.
Secure coding standards directly require NULL-pointer checks and safe dereference patterns.