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VulnerabilityPublished

CVE-2025-9157: appneta tcpreplay · Use After Free

Affects appneta tcpreplaySource CVE Database V5

0

Public exploit available · CVSS 4.8 Medium.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 4.0 base score
4.8Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 19 Aug 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: evidence found.

    CVSS exploit maturity: proof of concept public

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
appneta tcpreplayAffected
  • =4.5.2-beta1
  • =4.5.2-beta2
Fixed in–

AI-suggested

Specific mitigation steps include: 1) Immediate application of the patch identified by commit 73008f261f1cdf7a1087dc8759115242696d35da to all affected tcpreplay installations, especially those running versions 4.5.2-beta1 and 4.5.2-beta2. 2) Restrict local access to systems running tcpreplay to trusted administrators only, minimizing the risk of exploitation by unauthorized users. 3) Implement strict access controls and monitoring on systems used for network testing to detect any unusual activity that could indicate exploitation attempts. 4) Regularly audit and update network testing tools to stable, non-beta releases to reduce exposure to vulnerabilities common in pre-release software. 5) Incorporate runtime memory protection mechanisms such as Address Space Layout Randomization (ASLR) and stack canaries on hosts running tcpreplay to mitigate exploitation impact. 6) Educate internal teams about the risks of using beta software in production or sensitive environments and encourage timely patch management.

Description

A vulnerability was determined in appneta tcpreplay up to 4.5.2-beta2. The impacted element is the function untrunc_packet of the file src/tcpedit/edit_packet.c of the component tcprewrite. Executing manipulation can lead to use after free. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. This patch is called 73008f261f1cdf7a1087dc8759115242696d35da. Applying a patch is advised to resolve this issue.

References

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