CVE-2025-9019

tcpreplay tcpprep cidr.c mask_cidr6 heap-based overflow

MEDIUM
5.9
CVSS Score
Published: August 15, 2025 at 07:02 AM UTC
Updated: June 17, 2026 at 10:08 AM UTC
1 product affected across 1 vendorTcpreplay

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Severity
MEDIUM5.9
Exploit prediction
EPSS 1%
SSVC
PoC

Description

A vulnerability has been found in tcpreplay 4.5.1. This vulnerability affects the function mask_cidr6 of the file cidr.c of the component tcpprep. The manipulation leads to heap-based buffer overflow. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. The researcher is able to reproduce this with the latest official release 4.5.1 and the current master branch. The code maintainer cannot reproduce this for 4.5.2-beta1. In his reply the maintainer explains that "[i]n that case, this is a duplicate that was fixed in 4.5.2."

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (11)

Issue TrackingExploitPatchVendor Advisory
https://github.com/appneta/tcpreplay/issues/958
Issue TrackingExploitVendor Advisory
https://github.com/appneta/tcpreplay/issues/959
SignaturePermissions RequiredVDB Entry
https://vuldb.com/?ctiid.320080
VDB EntryTechnical DescriptionThird Party Advisory
https://vuldb.com/?id.320080
Third Party AdvisoryExploitVDB Entry
https://vuldb.com/?submit.623635
Third Party AdvisoryExploitVDB Entry
https://vuldb.com/?submit.623636

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-119CWE-122CWE-787

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