VulnerabilityModified
CVE-2020-36400
ZeroMQ libzmq 4.3.3 has a heap-based buffer overflow in zmq::tcp_read, a different vulnerability than CVE-2021-20235.
CRITICAL 9.8EPSS 1.84%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.84%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
ZeroMQ libzmq 4.3.3 has a heap-based buffer overflow in zmq::tcp_read, a different vulnerability than CVE-2021-20235.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.84% probability · 78th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- zeromq/libzmq
- Source
- cve@mitre.org
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26042Issue Tracking, Mailing List, Patch, Third Party Advisory
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libzmq/OSV-2020-1887.yamlThird Party Advisory
- https://github.com/zeromq/libzmq/commit/397ac80850bf8d010fae23dd215db0ee2c677306Patch, Third Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26042Issue Tracking, Mailing List, Patch, Third Party Advisory
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libzmq/OSV-2020-1887.yamlThird Party Advisory
- https://github.com/zeromq/libzmq/commit/397ac80850bf8d010fae23dd215db0ee2c677306Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.