CVE-2003-0791

Name: CVE-2003-0791
Creator: NVD / NIST
Published: 2003-10-07T04:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.13%

Last modified Jun 16, 2026

CVE-2003-0791 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The Script.prototype.freeze/thaw functionality in Mozilla 1.4 and earlier allows attackers to execute native methods by modifying the string used as input to the script.thaw JavaScript function, which is then deserialized and executed.. EPSS estimates a 2.13% chance of exploitation in the next 30 days.

Description

The Script.prototype.freeze/thaw functionality in Mozilla 1.4 and earlier allows attackers to execute native methods by modifying the string used as input to the script.thaw JavaScript function, which is then deserialized and executed.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.13%

79.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Mozilla	Mozilla	<= 1.4
Sco	Openserver	5.0.7

References

http://secunia.com/advisories/11103/URL Repurposed
http://www.mandriva.com/security/advisories?name=MDKSA-2004:021Broken Link
http://www.osvdb.org/8390Broken Link, Patch, Vendor Advisory
http://www.securityfocus.com/advisories/6979Broken Link, Patch, Third Party Advisory, VDB Entry, Vendor Advisory
http://www.securityfocus.com/bid/9322Broken Link, Patch, Third Party Advisory, VDB Entry, Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=221526Issue Tracking, Patch, Vendor Advisory
http://secunia.com/advisories/11103/URL Repurposed
http://www.mandriva.com/security/advisories?name=MDKSA-2004:021Broken Link
http://www.osvdb.org/8390Broken Link, Patch, Vendor Advisory
http://www.securityfocus.com/advisories/6979Broken Link, Patch, Third Party Advisory, VDB Entry, Vendor Advisory
http://www.securityfocus.com/bid/9322Broken Link, Patch, Third Party Advisory, VDB Entry, Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=221526Issue Tracking, Patch, Vendor Advisory

Timeline

Published: Oct 7, 2003
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2003-0791?

How severe is CVE-2003-0791?

CVE-2003-0791 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.13% probability of exploitation in the next 30 days.

How do I fix CVE-2003-0791?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2003-0791?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST