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CVE-2026-21900: Out-of-bounds Read

🗓️ 10 Jan 2026 00:00:00Reported by Rapid7Type 
rapid7
 rapid7
🔗 www.rapid7.com👁 8 Views

Out-of-bounds heap read in CryptoLib before 1.4.3 via JSON metadata parsing in cryptography_encrypt().

Related
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-21900
10 Jan 202601:44
–circl
cnnvd
CNNVD
CryptoLib 缓冲区错误漏洞
10 Jan 202600:00
–cnnvd
cve
CVE
CVE-2026-21900
10 Jan 202600:14
–cve
cvelist
Cvelist
CVE-2026-21900 CryptoLib Has Out-of-Bounds Read in KMC Encrypt Metadata Parsing via Flawed strtok Pattern
10 Jan 202600:14
–cvelist
euvd
EUVD
EUVD-2026-1894
10 Jan 202600:14
–euvd
mend
Mend
CVE-2026-21900
10 Jan 202600:14
–mend
nvd
NVD
CVE-2026-21900
10 Jan 202601:16
–nvd
ptsecurity
Positive Technologies
PT-2026-2130
10 Jan 202600:00
–ptsecurity
redhatcve
RedhatCVE
CVE-2026-21900
13 Jan 202622:52
–redhatcve
vulnrichment
Vulnrichment
CVE-2026-21900 CryptoLib Has Out-of-Bounds Read in KMC Encrypt Metadata Parsing via Flawed strtok Pattern
10 Jan 202600:14
–vulnrichment

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16 Jan 2026 00:00Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.15.9
CVSS 48.2
EPSS0.00598
SSVC
8