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CVE-2002-0231

34
FAUCET Score

CVE-2002-0231 describes a buffer overflow vulnerability in mIRC versions 5.91 and earlier. A remote server can exploit this flaw by sending a specially crafted, long nickname, leading to arbitrary code execution on the client's system. This vulnerability has a CVSS score of 7.5, indicating high severity, as it can be exploited remotely with low complexity and potentially impact confidentiality, integrity, and availability. While not listed on the KEV catalog or Hot List, an ExploitDB entry exists (EDB-21274) detailing a buffer overflow for various mIRC versions, though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
2.1aCPE matchmatch criteria
cpe:2.3:a:khaled_mardam-bey:mirc:2.1a:*:*:*:*:*:*:*
2.3aCPE matchmatch criteria
cpe:2.3:a:khaled_mardam-bey:mirc:2.3a:*:*:*:*:*:*:*
2.4CPE matchmatch criteria
cpe:2.3:a:khaled_mardam-bey:mirc:2.4:*:*:*:*:*:*:*
2.4aCPE matchmatch criteria
cpe:2.3:a:khaled_mardam-bey:mirc:2.4a:*:*:*:*:*:*:*
2.5aCPE matchmatch criteria
cpe:2.3:a:khaled_mardam-bey:mirc:2.5a:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
9.82%
Probability of exploitation in next 30 days
EPSS Percentile
95.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-21274 · Feb 3, 2002
This CVE's current EPSS score of 0.0982 is in the 92nd percentile among its peer group of 51,455 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

marc.info
online.securityfocus.com / archive/1/254105
iss.net / security_center/static/8083.php
PatchVendor Advisory
securityfocus.com / bid/4027
uuuppz.com / research/adv-001-mirc.htm