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CVE-2017-16228

30
FAUCET Score

CVE-2017-16228 is a critical vulnerability affecting Dulwich versions prior to 0.18.5, allowing remote attackers to execute arbitrary commands. This flaw arises when an SSH subprocess is used, specifically through an SSH URL containing an initial dash in the hostname, similar to other related vulnerabilities. With a CVSS score of 9.8 (Critical), it presents a severe risk due to its network-based attack vector, low attack complexity, and high potential for complete compromise of confidentiality, integrity, and availability. Despite its critical severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.18.4CPE matchmatch criteria
cpe:2.3:a:dulwich_project:dulwich:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.39%
Probability of exploitation in next 30 days
EPSS Percentile
87.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0339 is in the 80th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

pippatch availablevia ghsa
Product: dulwichFixed in: 0.18.5
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 11 (Ocata)Fixed in: python-dulwich

Vendor Advisories (2)

pipGHSA-cwwh-4382-6fwrcritical

Dulwich RCE Vulnerability

May 13, 2022
redhatCVE-2017-16228Moderate

python-dulwich: Setting SSH arguments from untrusted URLs allows code execution

Oct 29, 2017

References

tracker.debian.org / news/882440
Issue TrackingThird Party Advisory
dulwich.io / code/dulwich
ProductVendor Advisory
dulwich.io / code/dulwich/commit/7116a0cbbda571f7dac863f4b1c00b6e16d6d8d6
Issue TrackingPatchVendor Advisory