CVE-2003-1263

iCal 3.7 - Denial of Service via Malformed HTTP Request

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2003-1263. PoCs published by securma massine.

AI-analyzed exploit summary The provided code is a minimal stub demonstrating a buffer overflow in iCal's web server via an overly long HTTP request, leading to a denial of service (DoS). It lacks a functional exploit payload and only includes a basic netcat command.

Description

ICAL.EXE in iCal 3.7 allows remote attackers to cause a denial of service (crash) via a malformed HTTP request, possibly due to an invalid method name.

Exploits (2)

exploitdb STUB VERIFIED
by securma massine · textdoswindows
https://www.exploit-db.com/exploits/22118

The provided code is a minimal stub demonstrating a buffer overflow in iCal's web server via an overly long HTTP request, leading to a denial of service (DoS). It lacks a functional exploit payload and only includes a basic netcat command.

Classification
Stub 80%
Attack Type
Dos
Complexity
Trivial
Reliability
Theoretical
Target: iCal web server (version unspecified)
No auth needed
Prerequisites: Network access to the target's iCal web server on port 80
devstral-2 · analyzed Feb 16, 2026 Full analysis →
exploitdb WRITEUP VERIFIED
by securma massine · textdoswindows
https://www.exploit-db.com/exploits/22117

The provided text describes a denial of service vulnerability in iCal triggered by a malformed HTTP request. No actual exploit code is present, only a description and a placeholder URL.

Classification
Writeup 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Theoretical
Target: iCal (version unspecified)
No auth needed
Prerequisites: Network access to the target iCal service
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Third Party Advisory vdb-entry x_refsource_xf
http://www.iss.net/security_center/static/10973.php
Exploit, Patch vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/6506
Exploit, Vendor Advisory mailing-list x_refsource_bugtraq
http://archives.neohapsis.com/archives/bugtraq/2003-01/0011.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/6505

Scores

EPSS 0.0775
EPSS Percentile 93.9%

Details

Status published
Products (1)
brown_bear_software/ical 3.7
Published Dec 31, 2003
Tracked Since Feb 18, 2026