What is CVE-2025-9386?

CVE-2025-9386 is a medium-severity vulnerability in Appneta Tcpreplay, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2025-08-24.

How severe is CVE-2025-9386?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2025-9386 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Appneta Tcpreplay

CVE-2025-9386

A vulnerability has been found in appneta tcpreplay up to 4.5.1. The impacted element is the function get_l2len_protocol of the file get.c of the component tcprewrite. Such manipulation leads to use after free. The attack must be carried out locally. The exploit has been disclosed to the public and may be used. Upgrading to version 4.5.2-beta3 is sufficient to resolve this issue. You should upgrade the affected component.

Vulnerability class: Buffer Overflow

Published 2025-08-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.002 (13.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Appneta Tcpreplay — versions 4.5.0, 4.5.1, 4.5.2-beta3
Broadcom Tcpreplay

Weakness classification (CWE)

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
github.com/appneta/tcpreplay/issues/973 (issue-tracking, Exploit, Issue Tracking, Vendor Advisory)
drive.google.com/file/d/1DcQWaTmj1HSbRidOCWwe9vtgHsBnFuX7/view (Exploit, exploit)

Frequently asked questions

What is CVE-2025-9386?: CVE-2025-9386 is a medium-severity vulnerability in Appneta Tcpreplay, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2025-08-24.
How severe is CVE-2025-9386?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2025-9386 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.