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."
CVE-2025-9019
This medium-severity CVE scores 5.9 under NVD CVSS v3. EPSS exploit probability: 1.0%, top 41% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.9
- EG Score
- 5.9(medium)
- EG Risk
- 43(Track)EG Risk 43/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity59% × 45%Exploitation40% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 59.1%
- KEV
- Not listed
Published
August 15, 2025
Last Modified
June 17, 2026
References (14)
- cna@vuldbhttps://drive.google.com/file/d/13SQYVIb_YQoRfaJaaLf6iLtMiCRCHlBc/view?usp=sharing
- cna@vuldbhttps://github.com/appneta/tcpreplay/issues/958
- cna@vuldbhttps://github.com/appneta/tcpreplay/issues/958#issuecomment-3124876035
- cna@vuldbhttps://github.com/appneta/tcpreplay/issues/959
- cna@vuldbhttps://vuldb.com/?ctiid.320080
- cna@vuldbhttps://vuldb.com/?id.320080
- cna@vuldbhttps://vuldb.com/?submit.623635
- cna@vuldbhttps://vuldb.com/?submit.623636
- cna@vuldbhttps://vuldb.com/?submit.623637
- cna@vuldbhttps://vuldb.com/?submit.623638
- cna@vuldbhttps://vuldb.com/?submit.623639
- 134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/appneta/tcpreplay/issues/958
- 134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/appneta/tcpreplay/issues/959
- 134c704f-9b21-4f2e-91b3-4a467353bcc0https://vuldb.com/?submit.623639
Weakness Classification(3)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 13× in last 7d / 46× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 117 total refreshes for this CVE.
- 2026-07-24 14:17 UTCEPSS rescore
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- 2026-06-24 09:54 UTCNVD updateCVSS v3 → 5.9 · CVSS v4 → 1.3 · severity → MEDIUM
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Related CVEs(same CWE)
Same CWE
10 shownCWE-119 · CWE-787
Frequently asked(5)
What is CVE-2025-9019?
When was CVE-2025-9019 disclosed?
Is CVE-2025-9019 actively exploited?
What is the CVSS score of CVE-2025-9019?
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Dependency Blast Radius
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