9.1

CVE-2020-12740: broadcom tcpreplay Out-of-bounds Read

CVSS: 9.1v3.1CriticalModified
AliasesMGASA-2020-0278UBUNTU-CVE-2020-12740DEBIAN-CVE-2020-12740
Published 08-05-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-12740 is a critical (CVSS 9.1) Out-of-bounds Read vulnerability in broadcom tcpreplay. EPSS estimates a 1.69% chance of exploitation in the next 30 days, higher than 76.7% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (NVD)
EPSS score
1.69%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
USN-5205-1

Timeline

  1. 08-05-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.69%

Chance of exploitation in the next 30 days

Percentile

77%

Versus all other CVEs

30-day change

+0.04 pp

From 1.65% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.69%

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
  • tcpreplay< 4.3.3-1
Fedoraproject1 product
Mageia1 product
  • tcpreplay< 4.3.3-1.mga7
Ubuntu1 product
  • tcpreplay< 4.2.6-1ubuntu0.1~esm3 | < 4.3.2-1ubuntu0.1~esm1

5 vendors · 5 products

References

10 links