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CVE-2003-1263

28
FAUCET Score

CVE-2003-1263 describes a denial-of-service vulnerability in Brown Bear Software's iCal 3.7, where a malformed HTTP request can crash the ICAL.EXE process. This vulnerability has a CVSS score of 5.0, indicating a medium severity, and can be exploited remotely with low attack complexity, leading to partial availability impact. While not listed on the CISA KEV catalog, exploit code for both denial-of-service and a buffer overflow (PoC) exists on ExploitDB. Despite available exploits, there is no evidence of active exploitation, and the vulnerability has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
3.7CPE matchmatch criteria
cpe:2.3:a:brown_bear_software:ical:3.7:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
7.75%
Probability of exploitation in next 30 days
EPSS Percentile
94.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-22118 · Jan 3, 2003
This CVE's current EPSS score of 0.0775 is in the 92nd percentile among its peer group of 23,690 CVEs.

Social Chatter

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

archives.neohapsis.com / archives/bugtraq/2003-01/0011.html
ExploitVendor Advisory
iss.net / security_center/static/10973.php
securityfocus.com / bid/6505
securityfocus.com / bid/6506
ExploitPatch