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CVE-2025-66419

30
FAUCET Score

CVE-2025-66419 is a critical sandbox escape and privilege escalation vulnerability affecting MaxKB versions 2.3.1 and below, an open-source AI assistant. This flaw, rated 10.0 CVSS (CRITICAL), allows an unauthenticated attacker to fully compromise the system under specific concurrent conditions due to a weakness in the tool module. While no active exploitation or public exploit code is currently reported, and community discussion is minimal, the high FAUCET Risk Score of 93/100 indicates significant potential impact. Organizations using affected versions should upgrade to MaxKB 2.4.0 immediately to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.4.0CPE matchmatch criteria
cpe:2.3:a:maxkb:maxkb:*:*:*:*:-:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.28%
Probability of exploitation in next 30 days
EPSS Percentile
19.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0028 is in the 2nd percentile among its peer group of 36,862 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 / 1Panel-dev/MaxKB/commit/f8ada9a110c4dbef8c3c2636c78847ecd621ece7
Patch
github.com / 1Panel-dev/MaxKB/releases/tag/v2.4.0
Release Notes
github.com / 1Panel-dev/MaxKB/security/advisories/GHSA-f9qm-2pxq-fx6c
Vendor Advisory