tcpreplay tcpprep cidr.c mask_cidr6 heap-based overflow
Published Aug 15, 2025
2.3
LOWCVSS 4.0
EPSS 1.00%
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 products
- Vendor n/a Product Tcpreplay Defaultn/a
- Version 4.5.1StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Tcpreplay | n/a |
|
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
1 other source (CVE.org) ▾
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C
AV:N/AC:H/Au:N/C:N/I:N/A:P/E:POC/RL:ND/RC:C
1 other source (NVD) ▾
AV:N/AC:H/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Aug 15, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2025–2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (4 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 1.00% (0.00997) | 61.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.92% (0.00918) | 55.40th | v5 (v2026.06.15) |
| Jun 11, 2026 | 1.72% (0.01716) | 82.78th | v4 (v2025.03.14) |
| Aug 15, 2025 | 0.06% (0.00064) | 20.29th | v4 (v2025.03.14) |
References (11)
- https://drive.google.com/file/d/13SQYVIb_YQoRfaJaaLf6iLtMiCRCHlBc/view?usp=sharing exploit
- https://github.com/appneta/tcpreplay/issues/958 exploitissue-trackingIssue TrackingPatchVendor Advisory
- https://github.com/appneta/tcpreplay/issues/958#issuecomment-3124876035 issue-trackingExploitIssue TrackingPatchVendor Advisory
- https://github.com/appneta/tcpreplay/issues/959 exploitissue-trackingIssue TrackingVendor Advisory
- https://vuldb.com/?ctiid.320080 signaturepermissions-requiredPermissions RequiredVDB Entry
- https://vuldb.com/?id.320080 vdb-entrytechnical-descriptionThird Party AdvisoryVDB Entry
- https://vuldb.com/?submit.623635 third-party-advisoryExploitThird Party AdvisoryVDB Entry
- https://vuldb.com/?submit.623636 third-party-advisoryExploitThird Party AdvisoryVDB Entry
- https://vuldb.com/?submit.623637 third-party-advisoryExploitThird Party AdvisoryVDB Entry
- https://vuldb.com/?submit.623638 third-party-advisoryExploitThird Party AdvisoryVDB Entry
- https://vuldb.com/?submit.623639 exploitthird-party-advisoryThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| https://drive.google.com/file/d/13SQYVIb_YQoRfaJaaLf6iLtMiCRCHlBc/view?usp=sharing | exploit | |
| https://github.com/appneta/tcpreplay/issues/958 | exploitissue-trackingIssue TrackingPatchVendor Advisory | |
| https://github.com/appneta/tcpreplay/issues/958#issuecomment-3124876035 | issue-trackingExploitIssue TrackingPatchVendor Advisory | |
| https://github.com/appneta/tcpreplay/issues/959 | exploitissue-trackingIssue TrackingVendor Advisory | |
| https://vuldb.com/?ctiid.320080 | signaturepermissions-requiredPermissions RequiredVDB Entry | |
| https://vuldb.com/?id.320080 | vdb-entrytechnical-descriptionThird Party AdvisoryVDB Entry | |
| https://vuldb.com/?submit.623635 | third-party-advisoryExploitThird Party AdvisoryVDB Entry | |
| https://vuldb.com/?submit.623636 | third-party-advisoryExploitThird Party AdvisoryVDB Entry | |
| https://vuldb.com/?submit.623637 | third-party-advisoryExploitThird Party AdvisoryVDB Entry | |
| https://vuldb.com/?submit.623638 | third-party-advisoryExploitThird Party AdvisoryVDB Entry | |
| https://vuldb.com/?submit.623639 | exploitthird-party-advisoryThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.