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CVE-2023-36266

25
FAUCET Score

CVE-2023-36266 describes a sensitive information disclosure vulnerability in Keeper Password Manager for Desktop (versions up to 16.10.2) and KeeperFill Browser Extensions (versions up to 16.5.4). The flaw allows local attackers to extract plaintext passwords from memory after a user is logged in, with some persistence even after logout. Rated Medium severity (CVSS 5.5), this local attack requires low privileges and complexity, potentially leading to high confidentiality impact. While the vendor disputes the nature of the vulnerability, exploit code (EDB-51623) is publicly available, though there is no evidence of active exploitation, Metasploit modules, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
16.10.2CPE matchmatch criteria
cpe:2.3:a:keepersecurity:keeper:16.10.2:*:*:*:*:*:*:*
16.5.4CPE matchmatch criteria
cpe:2.3:a:keepersecurity:keeperfill:16.5.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.73%
Probability of exploitation in next 30 days
EPSS Percentile
50.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-51623 · Jul 28, 2023
This CVE's current EPSS score of 0.0073 is in the 95th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 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

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/173809/Keeper-Security-Desktop-16.10.2-Browser-Extension-16.5.4-Password-Dumper.html
docs.keeper.io / en/enterprise-guide/keeper-forcefield
docs.keeper.io / en/release-notes/desktop/web-vault-+-desktop-app/vault-release-17.2
harkenzo.tlstickle.com / 2023-06-12-Keeper-Password-Dumping
Third Party Advisory