CVE catalog
CVE-2020-36400
zeromq3: CVE-2020-36400
- Severity
- Low
- Source
- [NVD] · [CVE record]
- EPSS
- 1.84% · Oct 25, 2026
ZeroMQ libzmq 4.3.3 has a heap-based buffer overflow in zmq::tcp_read, a different vulnerability than CVE-2021-20235.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | zeromq3 | sid | 4.3.5-1 | not affected |
| Debian | zeromq3 | forky | 4.3.5-1 | not affected |
| Debian | zeromq3 | trixie | 4.3.5-1 | not affected |
| Debian | zeromq3 | bookworm | 4.3.4-6 | not affected |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | zeromq3 | source | sid | Not affected | unimportant | Not reported | Not reported |
| Debian | zeromq3 | source | forky | Not affected | unimportant | Not reported | Not reported |
| Debian | zeromq3 | source | trixie | Not affected | unimportant | Not reported | Not reported |
| Debian | zeromq3 | source | bookworm | Not affected | unimportant | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libzmq3-dev]Not affected
Source package: [zeromq3]
Details (2)
4.3.4-6· amd64 · bookwormNot affected
dsa · zeromq3 · debian · bookworm
4.3.4-6· arm64 · bookwormNot affected
dsa · zeromq3 · debian · bookworm
- [libzmq5]Not affected
Source package: [zeromq3]
Details (2)
4.3.4-6· amd64 · bookwormNot affected
dsa · zeromq3 · debian · bookworm
4.3.4-6· arm64 · bookwormNot affected
dsa · zeromq3 · debian · bookworm
Observed: