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CVE-2022-29777

35
FAUCET Score

CVE-2022-29777 is a critical heap overflow vulnerability affecting Onlyoffice Document Server v6.0.0 and below, and Core 6.1.0.26 and below, specifically within the DesktopEditor/fontengine/fontconverter/FontFileBase.h component. With a CVSS score of 9.8 (CRITICAL), this vulnerability is remotely exploitable with low attack complexity and no user interaction, potentially leading to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation (KEV: No), exploit intelligence shows no public Metasploit, Nuclei, or ExploitDB modules. However, the vulnerability has garnered significant community attention with 10 mentions, including GitHub discussions, indicating potential for future exploit development.

Impacted Technologies

VendorProductVersion(s)CPE
<= 6.1.0.26CPE matchmatch criteria
cpe:2.3:a:onlyoffice:core:*:*:*:*:*:*:*:*
<= 6.0.0CPE matchmatch criteria
cpe:2.3:a:onlyoffice: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
7.00%
Probability of exploitation in next 30 days
EPSS Percentile
93.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0700 is in the 89th 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 / moehw/poc_exploits/tree/master/CVE-2022-29777
ExploitThird Party Advisory
github.com / ONLYOFFICE/core/commit/b17d5e860f30e8be2caeb0022b63be4c76660178
PatchThird Party Advisory
github.com / ONLYOFFICE/DocumentServer/blob/master/CHANGELOG.md
Release NotesThird Party Advisory