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TI-2020-13500 Aliases CVE-2020-18976GHSA-v6p2-879w-fx47

Buffer Overflow in Tcpreplay v4.3.2 allows attackers to cause a Denial of Service via the…

Priority LOW 26CWE-120Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

Buffer Overflow in Tcpreplay v4.3.2 allows attackers to cause a Denial of Service via the 'do_checksum' function in 'checksum.c'. It can be triggered by sending a crafted pcap file to the 'tcpreplay-edit' binary. This issue is different than CVE-2019-8381.

Why it matters now

EPSS 0.00665 52nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:broadcom:tcpreplay:4.3.2:*:*:*:*:*:*:*4.3.2VulnerableBroadcom
  • cpe:2.3:a:broadcom:tcpreplay:4.3.2:*:*:*:*:*:*:* Versions 4.3.2 Vulnerable ·Broadcom

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-18976
  2. 2026-10-03 Alias added: GHSA-v6p2-879w-fx47

References

Exploit 1

  • TI-2024-15099 tcpreplay v4.4.4 was discovered to contain an infinite loop via the tcprewrite function at get.c. CVSS 3.1HIGH 7.5
  • TI-2025-32293 Within tcpreplay's tcprewrite, a double free vulnerability has been identified in the… CVSS 3.1HIGH 7.8
  • TI-2023-12413 An issue found in TCPreplay tcprewrite v.4.4.3 allows a remote attacker to cause a denial… CVSS 3.1HIGH 7.5
  • TI-2024-02831 appneta tcpreplay get.c get_layer4_v6 heap-based overflow CVSS 3.1HIGH 7.8
  • TI-2025-32292 A heap-buffer-overflow vulnerability exists in the tcpliveplay utility of the… CVSS 3.1HIGH 7.5
  • TI-2023-12419 An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service… CVSS 3.1HIGH 7.5
See all 49 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences