CVE-2026-0960Public exploit

Application hang via HTTP/3 decryption loop

Published Jan 14, 2026 · Updated Jan 14, 2026

An infinite loop in Wireshark 4.4.0 through 4.4.12 and 4.6.0 through 4.6.2 allows local users to cause an application hang. Wireshark has not published the faulty loop operation or exit condition; the disclosed locus is HTTP/3 traffic decryption during packet dissection. A target must open an attacker-supplied malformed capture and decrypt its traffic, after which processing hangs and consumes excessive CPU.

CVSS severity4.7
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An infinite loop in Wireshark 4.4.0 through 4.4.12 and 4.6.0 through 4.6.2 allows local users to cause an application hang. Wireshark has not published the faulty loop operation or exit condition; the disclosed locus is HTTP/3 traffic decryption during packet dissection. A target must open an attacker-supplied malformed capture and decrypt its traffic, after which processing hangs and consumes excessive CPU.

The record

CVE
CVE-2026-0960
Published
Jan 14, 2026
Updated
Jan 14, 2026
Vendor
Wireshark Foundation
Product
Wireshark
Classifications
CWE-835, T1499.004, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.6.0 <4.6.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Wireshark Foundation · Wiresharkversion=4.6.0 <4.6.3

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.7GitLab Inc.CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
T1499.004Endpoint Denial of Service
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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