Heap-based Buffer Overflow Affecting wireshark package, versions [4.4.0,4.4.18)[4.6.0,4.6.8)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published29 Aug 2026
- disclosed20 Aug 2026
- creditUnknown
Introduced: 20 Aug 2026
CVE-2026-76886 (opens in a new tab)How to fix?
Upgrade wireshark to version 4.4.18, 4.6.8 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow in the C12.22 protocol dissector. An attacker can execute arbitrary code or cause the application to crash by sending specially crafted network packets.