CVE-2016-6210
sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to
02 Description
sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to
03 Exploitation and scoring
- Exploitation
- Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
- SSVC decision
- ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 88.94% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 99.7% of scored records. A rank, not a probability.
- NVD base score
- 5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. 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
- 2017-02-13 00:00Z9 YR AGO
- Last updated
- 2026-05-29 20:17Z5 MO AGO
- Reserved
- 2016-07-13
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.9)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weaknesses
- Data version
- 5.2
- Document digest
- 27491cbcacc979eb58fe38ec80fbe9976f9a7c6eb3bfc4ced0ecbd1fd19fac49
05 Affected products
06 References
- access.redhat.comRHSA-2017:2563https://access.redhat.com/errata/RHSA-2017:2563
- www.securitytracker.com1036319http://www.securitytracker.com/id/1036319
- seclists.org20160714 opensshd - user enumerationhttp://seclists.org/fulldisclosure/2016/Jul/51
- www.debian.orgDSA-3626http://www.debian.org/security/2016/dsa-3626
- www.exploit-db.com40136https://www.exploit-db.com/exploits/40136/
- www.exploit-db.com40113https://www.exploit-db.com/exploits/40113/
- www.openssh.comhttps://www.openssh.com/txt/release-7.3
- security.gentoo.orgGLSA-201612-18https://security.gentoo.org/glsa/201612-18
- access.redhat.comRHSA-2017:2029https://access.redhat.com/errata/RHSA-2017:2029
- www.securityfocus.com91812http://www.securityfocus.com/bid/91812
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20190206-0001/
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
07 Fixed in
Debian 12
- openssh Fixed in 1:7.2p2-6
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- openssh Fixed in 1:7.2p2-6
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- openssh Fixed in 1:7.2p2-6
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- openssh Fixed in 1:6.6p1-2ubuntu2.8
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- openssh Fixed in 1:7.2p2-4ubuntu2.1
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.