Security readout for executives and security teams
Plain-English summary
CVE-2020-0795 is a reflective cross-site scripting issue in Microsoft SharePoint. An authenticated attacker could send a specially crafted request that may cause script execution in a user’s browser. It is medium severity because exploitation requires user interaction and authenticated access, with limited confidentiality and integrity impact.
Executive priority
Treat as a moderate-priority SharePoint hygiene item. It is not listed as known exploited in the bundle, but unremediated XSS in collaboration platforms can support phishing, session abuse, or data exposure.
Technical view
The issue is CWE-79 in affected SharePoint deployments where specially crafted requests are not properly sanitized. CVSS 3.1 is 5.4: network reachable, low complexity, low privileges required, user interaction required, changed scope, low confidentiality and integrity impact, and no availability impact.
Likely exposure
Exposure is most likely where affected SharePoint Enterprise Server 2016, Microsoft Business Productivity Servers 2010 SP2, or SharePoint Foundation 2013 SP1 remain deployed, especially if reachable by many authenticated users.
Exploitation context
The source bundle does not show CISA KEV listing or cited active exploitation. Exploitation is described as authenticated and requiring a specially crafted request plus user interaction, consistent with reflective XSS rather than server takeover.
Researcher notes
Evidence is limited to the CVE description, CVSS vector, affected products, KEV=false, and the MSRC advisory link. Do not assume unauthenticated exploitation, remote code execution, or active exploitation without additional vendor or threat-intelligence evidence.
Mitigation direction
- Review Microsoft’s MSRC advisory for version-specific updates or mitigation instructions.
- Prioritize remediation for internet-facing or broadly accessible SharePoint deployments.
- Restrict SharePoint access to trusted authenticated users while remediation is planned.
- Monitor Microsoft guidance for affected 2010 SP2, 2013 SP1, and 2016 installations.
Validation and detection
- Inventory SharePoint versions and map them to the affected products listed for CVE-2020-0795.
- Confirm whether MSRC guidance has been applied for each affected SharePoint deployment.
- Review access paths to identify deployments reachable by broad authenticated user groups.
- Check security tooling for CVE-2020-0795 findings, but validate results against installed product versions.
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-2020-0795 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-2020-0795CVE 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.