How severe is CVE-2017-16228?

CVE-2017-16228 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-16228 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-16228?

CVE-2017-16228 affects Dulwich Project Dulwich. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-16228?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2017-16228 published?

CVE-2017-16228 was published on 2017-10-29 and last updated on 2026-06-17.

CVE-2017-16228

CVE-2017-16228 is a critical-severity vulnerability in Dulwich Project Dulwich with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Dulwich Project Dulwich
Published: 2017-10-29
Last modified: 2026-06-17

Description

Dulwich before 0.18.5, when an SSH subprocess is used, allows remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostname, a related issue to CVE-2017-9800, CVE-2017-12836, CVE-2017-12976, CVE-2017-1000116, and CVE-2017-1000117.

Frequently asked questions

What is CVE-2017-16228?: Dulwich before 0.18.5, when an SSH subprocess is used, allows remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostname, a related issue to CVE-2017-9800, CVE-2017-12836, CVE-2017-12976, CVE-2017-1000116, and CVE-2017-1000117.
How severe is CVE-2017-16228?: CVE-2017-16228 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-16228 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-16228?: CVE-2017-16228 affects Dulwich Project Dulwich. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-16228?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-16228 published?: CVE-2017-16228 was published on 2017-10-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:dulwich_project:dulwich:*:*:*:*:*:*:*:*

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