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CVE-2021-40864

31
FAUCET Score

CVE-2021-40864 is a critical vulnerability affecting the Translate plugin (versions 6.1.x through 6.3.x before 6.3.0.72) for ONLYOFFICE Document Server, stemming from a lack of proper escape calls for msg.data and text fields. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network without authentication, allowing for complete compromise of confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.1.0, < 6.3.0.72CPE matchmatch criteria
cpe:2.3:a:onlyoffice:google_translate:*:*:*:*:*:document_server:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.32%
Probability of exploitation in next 30 days
EPSS Percentile
81.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0232 is in the 71st percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / ONLYOFFICE/plugin-translator/commit/2206c0179cb97e3b8b290a0ab5719b1f0f54542b
PatchThird Party Advisory
github.com / ONLYOFFICE/plugin-translator/compare/v6.3.0.71...v6.3.0.72
PatchThird Party Advisory