Description
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
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Wireshark Foundation | Wireshark | 4.6.0 – < 4.6.1, 4.4.0 – < 4.4.11 | 4.6.1 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | wireshark | 4.6.2-1 | — |
| Debian 13 | wireshark | 4.4.13-0+deb13u1 | DSA-6124-1 |
| Debian 12 | wireshark | 4.0.17-0+deb12u2 | — |
| Debian 11 | wireshark | 3.4.16-0+deb11u2 | DLA-4479-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | wireshark | No fix yet | — |
| Ubuntu 26.04 LTS | wireshark | No fix yet | — |
| Ubuntu 25.10 | wireshark | No fix yet | — |
| Ubuntu 24.04 LTS | wireshark | No fix yet | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | wireshark | No fix yet | — |
| Ubuntu Pro 20.04 LTS | wireshark | No fix yet | — |
| Ubuntu Pro 18.04 LTS | wireshark | No fix yet | — |
| Ubuntu Pro 16.04 LTS | wireshark | No fix yet | — |
| Ubuntu Pro 14.04 LTS | wireshark | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | libvirt | 11.0.0-150700.4.19.1 | SUSE-SU-2026:1169-1 |
| SLES 15 SP7 | wireshark | 3.6.24-150000.3.127.1 | SUSE-SU-2026:1169-1, SUSE-SU-2025:4440-1, SUSE-SU-2025:4413-1 |
| SLES 12 SP5 | wireshark | 2.4.16-48.66.1 | SUSE-SU-2026:0817-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | wireshark | 4.4.13-160000.1.1 | SUSE-SU-2026:20222-1 |
| SLES 16.0 | wireshark | 4.4.13-160000.1.1 | SUSE-SU-2026:20222-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | wireshark | 4.6.2-1.1 | openSUSE-SU-2025:15799-1 |
| openSUSE Leap 16.0 | wireshark | 4.4.13-160000.1.1 | openSUSE-SU-2026:20151-1 |
| openSUSE Leap 15.6 | wireshark | 4.2.14-150600.18.32.1 | SUSE-SU-2025:4440-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | wireshark-cli +1 | 1:4.4.2-1.amzn2023.0.4 | ALAS2023-2026-1450 |
| Amazon Linux 2 | wireshark +2 | 1:2.6.2-15.amzn2.0.10 | ALAS2-2026-3208 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | wireshark | No fix yet | — |
Advisories 13
- WID-SEC-2026-0489 Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Oct 21, 2026
- WID-SEC-2025-2730 Wireshark: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Oct 21, 2026
- SUSE-SU-2026:1169-1 Security update for wireshark SUSE / openSUSE Security Updates · Apr 3, 2026
- openSUSE-SU-2026:20151-1 Security update for wireshark SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15799-1 libwireshark19-4.6.2-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20222-1 Security update for wireshark SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:4413-1 Security update for wireshark SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:4440-1 Security update for wireshark SUSE / openSUSE Security Updates · Mar 23, 2026
- ALAS2-2026-3208 Moderate: wireshark security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Mar 19, 2026
- SUSE-SU-2026:0817-1 Security update for wireshark SUSE / openSUSE Security Updates · Mar 5, 2026
- ALAS2023-2026-1450 Moderate: wireshark security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Mar 5, 2026
- DLA-4479-1 wireshark - security update Debian Security (DSA / DLA) · Feb 16, 2026
- DSA-6124-1 wireshark - security update Debian Security (DSA / DLA) · Feb 8, 2026
References
- https://www.wireshark.org/security/wnpa-sec-2025-08.html
- GitLab Issue #20884 issue-tracking permissions-required