What is CVE-2022-29777?

CVE-2022-29777 is a critical-severity vulnerability in Onlyoffice Core, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-06-02.

How severe is CVE-2022-29777?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2022-29777 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Onlyoffice Core

CVE-2022-29777

Onlyoffice Document Server v6.0.0 and below and Core 6.1.0.26 and below were discovered to contain a heap overflow via the component DesktopEditor/fontengine/fontconverter/FontFileBase.h.

Vulnerability class: Buffer Overflow

EPSS: 0.069 (93.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC, Release Notes)
cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2022-29777?: CVE-2022-29777 is a critical-severity vulnerability in Onlyoffice Core, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-06-02.
How severe is CVE-2022-29777?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-29777 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.