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CVE-2019-0866

22
FAUCET Score

CVE-2019-0866 describes a Cross-site Scripting (XSS) vulnerability in Microsoft Azure DevOps Server and Team Foundation Server, stemming from improper sanitization of user-provided input. This medium-severity vulnerability (CVSS 6.1) requires user interaction (UI:R) and can lead to limited confidentiality and integrity impacts (C:L/I:L) if exploited. Attackers could leverage this via a network vector (AV:N) with low attack complexity (AC:L). There is no evidence of active exploitation, readily available exploit code in common frameworks like Metasploit or ExploitDB, and community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
2019CPE matchmatch criteria
cpe:2.3:o:microsoft:azure_devops_server:2019:*:*:*:*:*:*:*
2015CPE matchmatch criteria
cpe:2.3:a:microsoft:team_foundation_server:2015:4.2:*:*:*:*:*:*
2017CPE matchmatch criteria
cpe:2.3:a:microsoft:team_foundation_server:2017:3.1:*:*:*:*:*:*
2018CPE matchmatch criteria
cpe:2.3:a:microsoft:team_foundation_server:2018:1.2:*:*:*:*:*:*
2018CPE matchmatch criteria
cpe:2.3:a:microsoft:team_foundation_server:2018:3.2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.63%
Probability of exploitation in next 30 days
EPSS Percentile
83.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0263 is in the 92nd percentile among its peer group of 26,209 CVEs.

Social Chatter

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

Media Mentions

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 (6)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Team Foundation Server 2017 Update 3.1
View patch
microsoftpatch availablevia msrc
Product: Team Foundation Server 2018 Update 1.2
View patch
microsoftpatch availablevia msrc
Product: Team Foundation Server 2018 Update 3.2
View patch
microsoftpatch availablevia msrc
Product: Azure DevOps Server 2019
View patch
microsoftpatch availablevia msrc
Product: Team Foundation Server 2015 Update 4.2
View patch

Vendor Advisories (1)

microsoft2019-Apr/CVE-2019-0866Important

Azure DevOps Server and Team Foundation Server Cross-site Scripting Vulnerability

Apr 9, 2019

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2019-0866
PatchVendor Advisory
securityfocus.com / bid/107749
Third Party AdvisoryVDB Entry