How severe is CVE-2020-17135?

CVE-2020-17135 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-17135 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-17135?

CVE-2020-17135 primarily affects Microsoft Azure Devops Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-17135?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-17135 published?

CVE-2020-17135 was published on 2020-12-10 and last updated on 2026-06-17.

CVE-2020-17135

CVE-2020-17135 is a medium-severity vulnerability in Microsoft Azure Devops Server with a CVSS 3.x base score of 6.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 6.4)
CVSS v2: 4.9
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Azure Devops Server
Published: 2020-12-10
Last modified: 2026-06-17

Description

Azure DevOps Server Spoofing Vulnerability

Frequently asked questions

What is CVE-2020-17135?: Azure DevOps Server Spoofing Vulnerability
How severe is CVE-2020-17135?: CVE-2020-17135 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-17135 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-17135?: CVE-2020-17135 primarily affects Microsoft Azure Devops Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-17135?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-17135 published?: CVE-2020-17135 was published on 2020-12-10 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:microsoft:azure_devops_server:2019:update1.1:*:*:*:*:*:*
cpe:2.3:o:microsoft:azure_devops_server:2019.0.1:-:*:*:*:*:*:*

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