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CVE-2016-10009

52
FAUCET Score

CVE-2016-10009 describes an untrusted search path vulnerability in ssh-agent.c within OpenSSH versions prior to 7.4. This flaw allows remote attackers to execute arbitrary local PKCS#11 modules by manipulating a forwarded agent-socket. Rated as High severity (CVSS 7.3), the vulnerability has a low attack complexity and could lead to partial confidentiality, integrity, and availability impacts. While there is no evidence of active exploitation (KEV: No), exploit code for arbitrary library loading is publicly available via ExploitDB, and the vulnerability has garnered some community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 7.3CPE matchmatch criteria
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.3HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
3.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
37.43%
Probability of exploitation in next 30 days
EPSS Percentile
98.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-40963 · Dec 23, 2016
This CVE's current EPSS score of 0.3743 is in the 97th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: openssh-0:7.4p1-11.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: openssh
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openssh
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: openssh

Vendor Advisories (1)

redhatCVE-2016-10009Moderate

openssh: loading of untrusted PKCS#11 modules in ssh-agent

Dec 19, 2016

References

packetstormsecurity.com / files/140261/OpenSSH-Arbitrary-Library-Loading.html
packetstormsecurity.com / files/173661/OpenSSH-Forwarded-SSH-Agent-Remote-Code-Execution.html
access.redhat.com / errata/RHSA-2017:2029
bugs.chromium.org / p/project-zero/issues/detail
cert-portal.siemens.com / productcert/pdf/ssa-412672.pdf
seclists.org / fulldisclosure/2023/Jul/31
github.com / openbsd/src/commit/9476ce1dd37d3c3218d5640b74c34c65e5f4efe5
Patch
lists.debian.org / debian-lts-announce/2018/09/msg00010.html
security.freebsd.org / advisories/FreeBSD-SA-17:01.openssh.asc
security.netapp.com / advisory/ntap-20171130-0002
support.hpe.com / hpsc/doc/public/display
usn.ubuntu.com / 3538-1
exploit-db.com / exploits/40963
openssh.com / txt/release-7.4
openwall.com / lists/oss-security/2016/12/19/2
Mailing ListRelease Notes
openwall.com / lists/oss-security/2023/07/19/9
openwall.com / lists/oss-security/2023/07/20/1
securityfocus.com / bid/94968
securitytracker.com / id/1037490
slackware.com / security/viewer.php