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CVE-2025-66489: Incorrect Implementation of Authentication Algorithm

🗓️ 03 Dec 2025 00:00:00Reported by Rapid7Type 
rapid7
 rapid7
🔗 www.rapid7.com👁 8 Views

Authentication bypass in Cal.com prior to 5.9.8 allows unauthorized account access.

Related
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2025-66489
3 Dec 202521:24
–circl
cnnvd
CNNVD
Cal.com 安全漏洞
3 Dec 202500:00
–cnnvd
cve
CVE
CVE-2025-66489
3 Dec 202519:44
–cve
cvelist
Cvelist
CVE-2025-66489 Cal.com Authentication Bypass via bad TOTP + password checks
3 Dec 202519:44
–cvelist
euvd
EUVD
EUVD-2025-201128
3 Dec 202519:44
–euvd
mend
Mend
CVE-2025-66489
3 Dec 202519:44
–mend
nvd
NVD
CVE-2025-66489
3 Dec 202520:16
–nvd
ptsecurity
Positive Technologies
PT-2025-48991
3 Dec 202500:00
–ptsecurity
redhatcve
RedhatCVE
CVE-2025-66489
4 Dec 202520:12
–redhatcve
thn
The Hacker News
⚡ Weekly Recap: Apple 0-Days, WinRAR Exploit, LastPass Fines, .NET RCE, OAuth Scams & More
15 Dec 202512:24
–thn
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13 Feb 2026 00:00Current
7.3High risk
Vulners AI Score7.3
CVSS 3.19.8
CVSS 49.9
EPSS0.00842
SSVC
8