Critical severity9.1NVD Advisory· Published May 8, 2020· Updated Jun 17, 2026

CVE-2020-12740

Description

tcprewrite in Tcpreplay through 4.3.2 has a heap-based buffer over-read during a get_c operation. The issue is being triggered in the function get_ipv6_next() at common/get.c.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Tcpreplay/Tcprewritedescription
tcpreplay/tcpreplay-editllm-fuzzy
Range: <=4.3.2
tcpreplay/tcprewritellm-fuzzy
Range: <=4.3.2

Patches

Vulnerability mechanics

References

github.com/appneta/tcpreplay/issues/576nvdExploitIssue TrackingThird Party Advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4YAT4AGTHQKB74ETOQPJMV67TSDIAPOC/nvd
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UOSEIQ3D2OONCJEVMGC2TYBC2QX4E5EJ/nvd

News mentions

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cvss	0.591
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000