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CVE-2025-64487

24
FAUCET Score

CVE-2025-64487 is a high-severity privilege escalation vulnerability affecting Outline document management systems prior to version 1.1.0, stemming from inconsistent authorization checks in user and group membership management. This flaw, with a CVSS score of 7.6, allows a low-privileged attacker to achieve high confidentiality impact with low integrity impact, requiring user interaction. While the vulnerability has a high FAUCET Risk Score of 91/100, there is currently no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.1.0CPE matchmatch criteria
cpe:2.3:a:getoutline:outline:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
4.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.20%
Probability of exploitation in next 30 days
EPSS Percentile
9.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0020 is in the 5th percentile among its peer group of 890 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

github_advisoryvendor investigatingvia nvd_reference
View patch

References

github.com / outline/outline/releases/tag/v1.1.0
Release Notes
github.com / outline/outline/security/advisories/GHSA-c8xf-3j86-7686
Vendor Advisory