CISA KEV
CVE-2021-3199
Highest priority signal: CISA catalogues this CVE as known exploited.
CVSS
9.8
Severity
CRITICAL
CISA KEV
YES
Published
Jan 26, 2021
What the public data says
- Status NVD
- Analyzed
- Last modified
- Oct 09, 2026
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-22
- Added to KEV
- Oct 08, 2026
- CISA due date (US federal agencies)
- Oct 11, 2026
- CISA required action
- CISA: mitigate or discontinue the product
- CISA KEV
- ONLYOFFICE Docs Server Path Traversal Vulnerability
EPSS probability (FIRST)
- EPSS
- 19.4%
- Percentile
- 97.3%
- FIRST
- Snapshot Oct 11, 2026
How to interpret this record
Highest priority signal: CISA catalogues this CVE as known exploited.
Virtual Arena AI does not copy vendor or CNA vulnerability descriptions into this page. It exposes factual fields, its own prioritization context and links to authoritative sources.
Official sources
- NIST / NVD — CVE-2021-3199
- CVE.org — CVE-2021-3199
- FIRST — Exploit Prediction Scoring System
- CISA — Known Exploited Vulnerabilities Catalog
CISA KEV data is CC0. NIST/NVD is cited as the source of NVD factual fields. Third-party linked content keeps its own rights and terms.