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CVE-2002-0862

33
FAUCET Score

CVE-2002-0862 describes a critical vulnerability in the CryptoAPI of various Microsoft and Apple products, including Windows 98 through XP, Office for Mac, and Internet Explorer for Mac. The flaw lies in the improper verification of Basic Constraints in intermediate CA-signed X.509 certificates, enabling remote attackers to spoof trusted sites through man-in-the-middle attacks during SSL sessions. With a CVSS score of 6.8, this vulnerability is moderately severe, requiring medium attack complexity but allowing for partial compromise of confidentiality, integrity, and availability. While not listed on the KEV catalog or Hot List, an ExploitDB entry exists, though there is minimal community discussion or media coverage, suggesting it is not widely exploited in the wild.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2000:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_98:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_98se:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_me:-:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_nt:4.0:-:*:*:-:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
15.76%
Probability of exploitation in next 30 days
EPSS Percentile
96.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-21692 · Aug 6, 2002
This CVE's current EPSS score of 0.1576 is in the 97th percentile among its peer group of 19,955 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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

Remediation records are not available for this CVE.

References

marc.info
Mailing List
marc.info
Mailing List
marc.info
Mailing List
docs.microsoft.com / en-us/security-updates/securitybulletins/2002/ms02-050
PatchVendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/9776
Third Party AdvisoryVDB Entry
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1056
Broken Link
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1332
Broken Link
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2671
Broken Link