CVE-2025-51006Public exploit

Local process crash via repeated DLT cleanup

Published Sep 22, 2025 · Updated Sep 22, 2025

Double free in AppNeta Tcpreplay 4.5.1 allows local users to crash the tcprewrite process with a crafted PCAP file. During DLT cleanup, tcpedit_dlt_cleanup() reaches dlt_linuxsll2_cleanup() more than once, causing ctx->decoded_extra to be freed repeatedly. Exploitation requires a user to supply the file to the local command-line utility; the demonstrated result is process termination.

CVSS severity7.8
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Double free in AppNeta Tcpreplay 4.5.1 allows local users to crash the tcprewrite process with a crafted PCAP file. During DLT cleanup, tcpedit_dlt_cleanup() reaches dlt_linuxsll2_cleanup() more than once, causing ctx->decoded_extra to be freed repeatedly. Exploitation requires a user to supply the file to the local command-line utility; the demonstrated result is process termination.

The record

CVE
CVE-2025-51006
Published
Sep 22, 2025
Updated
Sep 22, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-415, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-415Double Free
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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