6.5

CVE-2023-43279: broadcom tcpreplay NULL Pointer Dereference

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2023-43279DEBIAN-CVE-2023-43279
Published 12-03-2024Last modified 04-11-2025
Open JSON

Vulnerability summary

CVE-2023-43279 is a medium (CVSS 6.5) NULL Pointer Dereference vulnerability in broadcom tcpreplay. EPSS estimates a 0.67% chance of exploitation in the next 30 days, higher than 51.2% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.67%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 3 · Related 2
MGASA-2024-0098OPENSUSE-SU-2025:20119-1USN-7231-1

Timeline

  1. 12-03-2024
    PublishedVulnerability first disclosed.
  2. 04-11-2025
    Last modifiedVulnerability information updated.

Description

Null Pointer Dereference in mask_cidr6 component at cidr.c in Tcpreplay 4.4.4 allows attackers to crash the application via crafted tcprewrite command.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.67%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

0.00 pp

From 0.67% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.67%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Tcpreplay

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Broadcom1 product
Debian1 product
  • tcpreplayAll versions (No fix recorded) | < 4.5.1-1
Fedoraproject1 product
Ubuntu1 product
  • tcpreplay< 3.4.4-2+deb8u1ubuntu0.1~esm3 | < 4.2.6-1ubuntu0.1~esm5 | < 4.3.2-1ubuntu0.1~esm3 | < 4.3.4-1ubuntu0.1~esm2 | < 4.4.4-1ubuntu0.1~esm1

4 vendors · 4 products

References

10 links