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CVE-2021-25630

24
FAUCET Score

CVE-2021-25630 is a privilege escalation vulnerability affecting Collabora Office Online, specifically within the "loolforkit" program. A flaw in the program's user authentication check allowed any local user to execute "loolforkit" with elevated privileges, leading to potential root access. This vulnerability has a CVSS score of 7.8 (HIGH), indicating a low attack complexity and the potential for high confidentiality, integrity, and availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.2.0, < 4.2.13CPE matchmatch criteria
cpe:2.3:a:collaboraoffice:online:*:*:*:*:*:*:*:*
>= 6.4.0, < 6.4.3CPE matchmatch criteria
cpe:2.3:a:collaboraoffice:online:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.31%
Probability of exploitation in next 30 days
EPSS Percentile
23.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0031 is in the 60th percentile among its peer group of 17,061 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 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

Remediation records are not available for this CVE.

References

github.com / CollaboraOnline/online/security/advisories/GHSA-49w3-gr3w-m68v
Third Party Advisory
openwall.com / lists/oss-security/2021/01/18/3
Mailing ListThird Party Advisory