How severe is CVE-2019-0777?

CVE-2019-0777 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-0777 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-0777?

CVE-2019-0777 primarily affects Microsoft Team Foundation Server. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-0777?

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

When was CVE-2019-0777 published?

CVE-2019-0777 was published on 2019-04-09 and last updated on 2026-06-17.

CVE-2019-0777

CVE-2019-0777 is a medium-severity vulnerability in Microsoft Team Foundation Server with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Microsoft Team Foundation Server
Published: 2019-04-09
Last modified: 2026-06-17

Description

A Cross-site Scripting (XSS) vulnerability exists when Team Foundation Server does not properly sanitize user provided input, aka 'Team Foundation Server Cross-site Scripting Vulnerability'.

Frequently asked questions

What is CVE-2019-0777?: A Cross-site Scripting (XSS) vulnerability exists when Team Foundation Server does not properly sanitize user provided input, aka 'Team Foundation Server Cross-site Scripting Vulnerability'.
How severe is CVE-2019-0777?: CVE-2019-0777 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-0777 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-0777?: CVE-2019-0777 primarily affects Microsoft Team Foundation Server. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-0777?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-0777 published?: CVE-2019-0777 was published on 2019-04-09 and last updated on 2026-06-17.

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0777

Affected products (3)

cpe:2.3:a:microsoft:team_foundation_server:2017:3.1:*:*:*:*:*:*
cpe:2.3:a:microsoft:team_foundation_server:2018:1.2:*:*:*:*:*:*
cpe:2.3:a:microsoft:team_foundation_server:2018:3.2:*:*:*:*:*:*

More vulnerabilities in Microsoft Team Foundation Server

CVE-2019-1306 — Critical (CVSS 9.8): A remote code execution vulnerability exists when Azure DevOps Server (ADO) and Team Foundation Server (TFS) fail to…
CVE-2019-1072 — Critical (CVSS 9.8): A remote code execution vulnerability exists when Azure DevOps Server and Team Foundation Server (TFS) improperly…
CVE-2018-8529 — Critical (CVSS 9.8): A remote code execution vulnerability exists when Team Foundation Server (TFS) does not enable basic authorization on…
CVE-2020-0758 — High (CVSS 7.5): An elevation of privilege vulnerability exists when Azure DevOps Server and Team Foundation Services improperly handle…
CVE-2021-27067 — Medium (CVSS 6.5): Azure DevOps Server and Team Foundation Server Information Disclosure Vulnerability
CVE-2019-0971 — Medium (CVSS 6.5): An information disclosure vulnerability exists when Azure DevOps Server and Microsoft Team Foundation Server do not…

All CVEs affecting Microsoft Team Foundation Server →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →