Security readout for executives and security teams
Plain-English summary
CVE-2020-0694 is a medium-severity SharePoint cross-site scripting issue. An attacker with some access could send a specially crafted request that SharePoint fails to sanitize, potentially causing script to run in another user's browser. Business impact is mainly account context abuse, data exposure, or content tampering, not server takeover.
Executive priority
Address in normal vulnerability remediation cycles, with faster handling for exposed SharePoint portals or environments containing sensitive data. This is not rated critical and no active exploitation is cited, but XSS in collaboration platforms can still support account abuse and data exposure.
Technical view
The vulnerability is CWE-79 XSS in Microsoft SharePoint Server request sanitization. CVSS 3.1 is 5.4: network reachable, low complexity, low privileges required, user interaction required, changed scope, low confidentiality and integrity impact, no availability impact. It affects SharePoint Enterprise Server 2016 and SharePoint Server 2019 and 2013 SP1.
Likely exposure
Exposure is most likely in organizations still operating Microsoft SharePoint Enterprise Server 2016, SharePoint Server 2019, or SharePoint Server 2013 SP1. Internet-facing SharePoint sites increase business risk, but the source bundle does not state whether unauthenticated exploitation is possible; the CVSS vector indicates low privileges are required.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. The CVSS vector indicates exploitation needs network access, low privileges, and user interaction. Treat it as a credible web-application risk for affected SharePoint deployments, not confirmed mass exploitation.
Researcher notes
Key constraints are PR:L and UI:R, so validation should focus on authenticated SharePoint surfaces and user-driven execution paths without weaponizing the issue. Evidence in the bundle identifies affected products and CVSS only; it does not provide proof-of-concept details, specific patches, or compensating controls.
Mitigation direction
- Review Microsoft MSRC guidance for CVE-2020-0694 and apply applicable SharePoint updates.
- Prioritize internet-facing or partner-facing SharePoint farms first.
- Restrict SharePoint access to trusted users and networks where operationally possible.
- Retire or isolate unsupported SharePoint versions if still present.
- Monitor Microsoft guidance for any changed remediation or exploitation status.
Validation and detection
- Inventory SharePoint Server versions across all farms and hosted environments.
- Compare installed build and update levels against Microsoft guidance for CVE-2020-0694.
- Confirm whether affected SharePoint sites are internet-facing or externally shared.
- Review access logs for unusual authenticated requests to SharePoint pages.
- Validate browser-side security controls after remediation using approved internal testing.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2020-0694 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N2.32.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0694CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.