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CVE-2023-36266

An issue was discovered in Keeper Password Manager for Desktop version 16.10.2, and the...

5.5 MediumPublic exploitDisputed

An issue was discovered in Keeper Password Manager for Desktop version 16.10.2 (fixed in 17.2), and the KeeperFill Browser Extensions version 16.5.4 (fixed in 17.2), allows local attackers to gain sensitive information via plaintext password storage in memory after the user is already logged in, and may persist after logout. NOTE: the vendor disputes this for two reasons: the information is inherently available during a logged-in session when the attacker can read from arbitrary memory locations, and information only remains available after logout because of memory-management limitations of web browsers (not because the Keeper technology itself is retaining the information).

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

0.78%Up 0.7 points since Jul 14, 2023
90%50%10%1%

What each source reports

NVD Score used 5.5

An issue was discovered in Keeper Password Manager for Desktop version 16.10.2 (fixed in 17.2), and the KeeperFill Browser Extensions version 16.5.4 (fixed in 17.2), allows local attackers to gain sensitive information via plaintext password storage in memory after the user is already logged in, and may persist after logout. NOTE: the vendor disputes this for two reasons: the information is inherently available during a logged-in session when the attacker can read from arbitrary memory locations, and information only remains available after logout because of memory-management limitations of web browsers (not because the Keeper technology itself is retaining the information).

Record
CVE-2023-36266
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-522
Updated
2026-11-02
CVE List No score

An issue was discovered in Keeper Password Manager for Desktop version 16.10.2 (fixed in 17.2), and the KeeperFill Browser Extensions version 16.5.4 (fixed in 17.2), allows local attackers to gain sensitive information via plaintext password storage in memory after the user is already logged in, and may persist after logout. NOTE: the vendor disputes this for two reasons: the information is inherently available during a logged-in session when the attacker can read from arbitrary memory locations, and information only remains available after logout because of memory-management limitations of web browsers (not because the Keeper technology itself is retaining the information).

Record
CVE-2023-36266
Updated
2026-11-02
EUVDEUVD-2023-40237 No score

An issue was discovered in Keeper Password Manager for Desktop version 16.10.2 (fixed in 17.2), and the KeeperFill Browser Extensions version 16.5.4 (fixed in 17.2), allows local attackers to gain sensitive information via plaintext password storage in memory after the user is already logged in, and may persist after logout. NOTE: the vendor disputes this for two reasons: the information is inherently available during a logged-in session when the attacker can read from arbitrary memory locations, and information only remains available after logout because of memory-management limitations of web browsers (not because the Keeper technology itself is retaining the information).

Record
EUVD-2023-40237
Updated
2026-11-02
GitHub AdvisoriesGHSA-qxpv-rxq7-rg72 5.5

An issue was discovered in Keeper Password Manager for Desktop version 16.10.2, and the...

An issue was discovered in Keeper Password Manager for Desktop version 16.10.2, and the KeeperFill Browser Extensions version 16.5.4, allows local attackers to gain sensitive information via plaintext password storage in memory after the user is already logged in, and may persist after logout.

Record
GHSA-qxpv-rxq7-rg72
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-522
Updated
2026-11-02

Affected products

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBKeeper Security desktop 16.10.2 & Browser Extension 16.5.4 - Password Dumping2023-07-28

History

History
RecordedChangedSources
first indexedCVE List, EUVD, Exploit-DB, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-36266 is a medium vulnerability (CVSS 5.5) in Keepersecurity Keeper, published July 12, 2023. Its validity is disputed. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.78%, the 56th percentile.

References

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