Medium [CVE-2026-15173] Denial of Service via pcapng file parser crash
This medium-severity Red Hat Linux advisory covers CVE-2026-15173 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published Record updated
Summary
pcapng file parser crash in Wireshark 4.6.0 to 4.6.6 allows denial of service A flaw was found in Wireshark. A remote attacker could exploit a vulnerability in the pcapng file parser, leading to a crash of the application.
This denial of service (DoS) could prevent legitimate users from accessing the service, impacting its availability. Exploitation requires user interaction, as the user must open the malicious file.
Red Hat severity: Moderate. Weakness: CWE-825.
Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: wireshark.
Is CVE-2026-15173 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2026-15173 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2026-15173?
The advisory VulniPulse tracks names no fixed release. Follow Red Hat's guidance for workarounds and updates.
Confirm against the vendor advisory before you patch.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists. Confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
Mitigation checklist
- To mitigate this issue, users should avoid opening pcapng files from untrusted or unknown sources. Exercise caution when handling network capture files, especially those received unexpectedly or from external origins.
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
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