CVE-2020-17145 | Azure DevOps Server and Team Foundation Services Spoofing Vulnerability

Azure DevOps Server and Team Foundation Services Spoofing Vulnerability

Published: 2020-12-10 Last update: 2025-08-28 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-17145 is rated Moderate Risk (45.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.55%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-17145

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 0.45% 0.55% +0.10%
2 2025-11-18 0.53% 0.45% -0.08%
3 2025-10-30 — 0.53% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-17145

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.4 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.3 2.7 [email protected]
5.4 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.3 2.7 [email protected]
4.9 2.0 MEDIUM
AV:N/AC:M/Au:S/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 6.8 4.9 [email protected]

Weakness enumeration for CVE-2020-17145

Affected software / configurations for CVE-2020-17145

Vendor Product Version Raw CPE
microsoft team_foundation_server 2015 cpe:2.3:a:microsoft:team_foundation_server:2015:4.2:*:*:*:*:*:*
microsoft team_foundation_server 2017 cpe:2.3:a:microsoft:team_foundation_server:2017:3.1:*:*:*:*:*:*
microsoft team_foundation_server 2018 cpe:2.3:a:microsoft:team_foundation_server:2018:1.2:*:*:*:*:*:*
microsoft team_foundation_server 2018 cpe:2.3:a:microsoft:team_foundation_server:2018:3.2:*:*:*:*:*:*
microsoft azure_devops_server 2019 cpe:2.3:o:microsoft:azure_devops_server:2019:update1.1:*:*:*:*:*:*
microsoft azure_devops_server 2019.0.1 cpe:2.3:o:microsoft:azure_devops_server:2019.0.1:-:*:*:*:*:*:*
microsoft azure_devops_server 2020 cpe:2.3:o:microsoft:azure_devops_server:2020:-:*:*:*:*:*:*

References for CVE-2020-17145

cvelogic Threat Intelligence