A heap-based buffer over-read was discovered in the tcpreplay-edit binary of Tcpreplay…
Priority LOW 27CWE-125Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.
Summary
A heap-based buffer over-read was discovered in the tcpreplay-edit binary of Tcpreplay 4.3.0 beta1, during the incremental checksum operation. The issue gets triggered in the function csum_replace4() in incremental_checksum.h, causing a denial of service.
Why it matters now
EPSS 0.01239 69th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
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:broadcom:tcpreplay:4.3.0:beta1:*:*:*:*:*:* | 4.3.0 beta1 | Vulnerable | Broadcom |
| cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:* | 28 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* | 29 | Vulnerable | Fedoraproject |
- cpe:2.3:a:broadcom:tcpreplay:4.3.0:beta1:*:*:*:*:*:* Versions 4.3.0 beta1 Vulnerable ·Broadcom
- cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:* Versions 28 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* Versions 29 Vulnerable ·Fedoraproject
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2018-18407
- 2026-10-03 Alias added: GHSA-7jw9-xj3x-9jqh
References
Sources
- CVE-2018-18407 · CVE Program
- CVE-2018-18407 · NVD
- FIRST EPSS
- GHSA-7jw9-xj3x-9jqh · GitHub Advisory Database · CC BY 4.0
- CVE-2018-18407 · 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