CVE-2014-9721
libzmq before 4.0.6 and 4.1.x before 4.1.1 allows remote attackers to conduct downgrade attacks and bypass ZMTP v3 protocol security mechanisms via a ZMTP v2 or earlier header.
02 Description
libzmq before 4.0.6 and 4.1.x before 4.1.1 allows remote attackers to conduct downgrade attacks and bypass ZMTP v3 protocol security mechanisms via a ZMTP v2 or earlier header.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.51% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 84.4% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2015-06-03 20:00Z11 YR AGO
- Last updated
- 2024-08-06 13:55Z2 YR AGO
- Reserved
- 2015-05-21
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-20Improper Input ValidationClass
- Data version
- 5.1
- Document digest
- a94eff5b1e39394ca48b4e1e0a23bf5be8d24f51cec2b49c4f22f6e2197c22b2
05 Affected products
06 References
- github.comhttps://github.com/zeromq/zeromq4-x/commit/b6e3e0f601e2c1ec1f3aac880ed6a3fe63043e51
- www.debian.orgDSA-3255http://www.debian.org/security/2015/dsa-3255
- lists.fedoraproject.orgFEDORA-2015-8635http://lists.fedoraproject.org/pipermail/package-announce/2015-May/159176.html
- lists.opensuse.orgopenSUSE-SU-2015:1028http://lists.opensuse.org/opensuse-updates/2015-06/msg00018.html
- github.comhttps://github.com/zeromq/libzmq/issues/1273
07 Fixed in
Debian 12
- zeromq3 Fixed in 4.0.5+dfsg-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- zeromq3 Fixed in 4.0.5+dfsg-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- zeromq3 Fixed in 4.0.5+dfsg-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- zeromq3 Fixed in 4.0.4+dfsg-2ubuntu0.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.