In Wireshark 2.6.0 to 2.6.4 and 2.4.0 to 2.4.10, the MMSE dissector could go into an…
Priority LOW 39CWE-835Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 6 fixed, 2 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-835.
Summary
In Wireshark 2.6.0 to 2.6.4 and 2.4.0 to 2.4.10, the MMSE dissector could go into an infinite loop. This was addressed in epan/dissectors/packet-mmse.c by preventing length overflows.
Why it matters now
EPSS 0.03241 88th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 1 advisoryRed Hat: 6 fixed, 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:* | 2.4.0 – 2.4.10; 2.6.0 – 2.6.4 | Vulnerable | Wireshark Foundation |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
- cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:* Versions 2.4.0 – 2.4.10; 2.6.0 – 2.6.4 Vulnerable ·Wireshark Foundation
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
Remediation
Red Hat 1 advisory
- RHSA-2020:1047 Released 2020-03-31 · Red Hat rating Moderatewireshark security and bug fix update
- Red Hat Enterprise Linux Client (v. 7) wireshark-1.10.14-24.el7, wireshark-gnome-1.10.14-24.el7
- Red Hat Enterprise Linux Client Optional (v. 7) wireshark-devel-1.10.14-24.el7
- Red Hat Enterprise Linux Server (v. 7) wireshark-1.10.14-24.el7, wireshark-1.10.14-24.el7.ppc, wireshark-gnome-1.10.14-24.el7
- Red Hat Enterprise Linux Server Optional (v. 7) wireshark-devel-1.10.14-24.el7, wireshark-devel-1.10.14-24.el7.ppc
- Red Hat Enterprise Linux Workstation (v. 7) wireshark-1.10.14-24.el7, wireshark-gnome-1.10.14-24.el7
- Red Hat Enterprise Linux Workstation Optional (v. 7) wireshark-devel-1.10.14-24.el7
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2020:1047 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2020:1047 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2020:1047 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2020:1047 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2020:1047 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2020:1047 |
Not affected: 1 product
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2018-19622
- 2026-10-03 Alias added: GHSA-4q77-2r7r-9qjc
References
Advisory 4
Sources
- CVE-2018-19622 · CVE Program
- CVE-2018-19622 · NVD
- FIRST EPSS
- GHSA-4q77-2r7r-9qjc · GitHub Advisory Database · CC BY 4.0
- CVE-2018-19622 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences