CVE-2025-13946 | Loop with Unreachable Exit Condition ('Infinite Loop') in Wireshark

Exp

MEGACO dissector infinite loop in Wireshark 4.6.0 to 4.6.1 and 4.4.0 to 4.4.11 allows denial of service

Published: 2025-12-03 Last update: 2025-12-31 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-13946 is rated Exploit Available (50/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.01%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2025-13946

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2025-13946

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-03 — 0.01% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-13946

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 3.6 [email protected]

Weakness enumeration for CVE-2025-13946

OS Trackers for CVE-2025-13946

vendor priority summary link
alpine — CVE-2025-13946: 1 source package rows (wireshark); 13 state rows across 3 repos (3.22-community, 3.23-community, edge-community); fixed 0, open 13. https://security.alpinelinux.org/vuln/CVE-2025-13946
debian not yet assigned CVE-2025-13946 not yet assigned priority: Debian including 1 source packages (wireshark), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2025-13946
redhat medium — https://access.redhat.com/security/cve/CVE-2025-13946
suse medium CVE-2025-13946 severity moderate: SUSE including 93 source package names (2.2.1-5.14:libxml2-2-2.11.6-slfo.1.1_6.1, 2.2.1-5.27:libxml2-2-2.11.6-slfo.1.1_6.1, …), 388 product×package rows across 97 product lines (Container suse/sl-micro/6.0/baremetal-os-container, Container suse/sl-micro/6.0/base-os-container, … (97 product lines)): Fixed 244, Known Not Affected 138, First Fixed 6. https://www.suse.com/security/cve/CVE-2025-13946/
ubuntu medium CVE-2025-13946 medium priority: Ubuntu including 1 source packages (wireshark), 9 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): needs-triage 8, ignored 1. https://ubuntu.com/security/CVE-2025-13946

Affected software / configurations for CVE-2025-13946

Vendor Product Version Raw CPE
wireshark wireshark >= 4.4.0, < 4.4.12 cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*
wireshark wireshark >= 4.6.0, < 4.6.2 cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*

References for CVE-2025-13946

URL Tags
https://gitlab.com/wireshark/wireshark/-/issues/20884 Exploit Issue Tracking Third Party Advisory
https://www.wireshark.org/security/wnpa-sec-2025-08.html Issue Tracking Vendor Advisory
cvelogic Threat Intelligence