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CVE-2021-3992

23
FAUCET Score

CVE-2021-3992 describes an Improper Access Control vulnerability in kimai2_project kimai2. This medium-severity flaw (CVSS 6.5) allows an authenticated attacker to achieve high confidentiality impact without user interaction, potentially exposing sensitive data. While no public exploits, Metasploit modules, or Nuclei templates are available, and there is no evidence of active exploitation or significant community discussion, organizations using kimai2 should still address this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.16.2CPE matchmatch criteria
cpe:2.3:a:kimai2_project:kimai2:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.03%
Probability of exploitation in next 30 days
EPSS Percentile
60.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0103 is in the 73rd percentile among its peer group of 21,957 CVEs.

Social Chatter

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

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: kevinpapst/kimai2Fixed in: 1.16.3
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-9w8f-7wgr-2h7gmedium

kimai2 is vulnerable to Improper Access Control

Dec 3, 2021

References

github.com / kevinpapst/kimai2/commit/ff9acab0fc81f0e9490462739ef15fe4ab028ea5
PatchThird Party Advisory
huntr.dev / bounties/a0c438fb-c8e1-40cf-acc6-c8a532b80b93
ExploitPatchThird Party Advisory