← Global Threat Landscape
CVE-2021-3199
CWE-22
Critical
101.4
RPSRPS range: 0–105; KEV-listed vulnerabilities can receive an exploitation amplifier.
Description
Directory traversal with remote code execution can occur in /upload in ONLYOFFICE Document Server before 5.6.3, when JWT is used, via a /.. sequence in an image upload parameter.
Source: NVD
Signals
- CVSS
- 9.8
- Critical · v3.1
- EPSS
- 8.21%
- Probability of exploitation in the next 30 days (FIRST)
- CISA KEV
- In CISA KEV since Oct 2026
- Fix commit
- No known fix commit
- Sources: MoreFixes, FreshFixes
- Weakness
- CWE-22
- Published
- 26 Jan 2021
- Last modified 8 Oct 2026
How to read these signals: RPS · EPSS · CISA KEV · Data sources
Get this score from the API
curl -H "Authorization: Bearer dsec_live_xxxxxxxx" \
https://api.intelligence.devsecure.io/api/v1/rps/CVE-2021-3199Replace the placeholder with your key. Get a free API key or rank your own CVEs.
Data as of 9 Oct 2026, 05:16 UK time