Out-of-bounds Read in Wireshark
Priority LOW 34CWE-125Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
HTTP3 dissector crash in Wireshark 4.2.0 allows denial of service via packet injection or crafted capture file
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00466 40th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed Wireshark (Wireshark Foundation): 4.2.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Wireshark Foundation | Wireshark | 4.2.0 to before 4.2.1 | 4.2.1 | Patch available | CNA |
- Wireshark VendorWireshark Foundation Affected 4.2.0 to before 4.2.1 Fixed in 4.2.1 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:wireshark:wireshark:4.2.0:*:*:*:*:*:*:* | 4.2.0 | Vulnerable | Wireshark Foundation |
- cpe:2.3:a:wireshark:wireshark:4.2.0:*:*:*:*:*:*:* Versions 4.2.0 Vulnerable ·Wireshark Foundation
Remediation
- Fix · CNA Wireshark (Wireshark Foundation) Fixed in 4.2.1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Wireshark 4.2.1
3 records Highest priority Priority HIGH 1 HIGH, 2 LOW
Other records, highest priority first
- TI-2024-00191 Loop with Unreachable Exit Condition ('Infinite Loop') in WiresharkPriority HIGH 69
- TI-2024-00190 Uncontrolled Recursion in WiresharkPriority LOW 34
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-0207
- 2026-10-03 Alias added: GHSA-5qqv-6f97-m7hw
References
More Wireshark Foundation Wireshark vulnerabilities
- TI-2026-53718 Heap-based Buffer Overflow in Wireshark CVSS 3.1CRITICAL 9.8
- TI-2026-63612 Heap-based Buffer Overflow in Wireshark CVSS 3.1HIGH 8.8
- TI-2024-16149 A buffer overflow in Wireshark before 4.2.0 allows a remote attacker to cause a denial of… CVSS 3.1HIGH 7.5
- TI-2010-00291 Multiple buffer overflows in the LWRES dissector in Wireshark 0.9.15 through 1.0.10 and… CVSS 2.0HIGH 7.5
- TI-2026-63614 Heap-based Buffer Overflow in Wireshark CVSS 3.1HIGH 8.1
- TI-2014-01823 Buffer overflow in the mpeg_read function in wiretap/mpeg.c in the MPEG parser in… CVSS 2.0HIGH 9.3
Sources
- CVE-2024-0207 · CVE Program
- CVE-2024-0207 · NVD
- FIRST EPSS
- GHSA-5qqv-6f97-m7hw · GitHub Advisory Database · CC BY 4.0
- CVE-2024-0207 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences