CVE-1999-1549

Name: CVE-1999-1549
Creator: NVD / NIST
Published: 1999-11-16T05:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.58%

Last modified Jun 16, 2026

CVE-1999-1549 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Lynx 2.x does not properly distinguish between internal and external HTML, which may allow a local attacker to read a "secure" hidden form value from a temporary file and craft a LYNXOPTIONS: URL that causes Lynx to modify the user's configuration file and execute commands.. EPSS estimates a 0.58% chance of exploitation in the next 30 days.

Description

Lynx 2.x does not properly distinguish between internal and external HTML, which may allow a local attacker to read a "secure" hidden form value from a temporary file and craft a LYNXOPTIONS: URL that causes Lynx to modify the user's configuration file and execute commands.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.58%

43.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-346

Affected Software

Vendor	Product	Versions
Lynx Project	Lynx	2.7
Lynx Project	Lynx	2.8

References

http://marc.info/?l=bugtraq&m=94286509804526&w=2Exploit, Mailing List
http://www.securityfocus.com/bid/804Broken Link, Exploit, Third Party Advisory, VDB Entry, Vendor Advisory
http://marc.info/?l=bugtraq&m=94286509804526&w=2Exploit, Mailing List
http://www.securityfocus.com/bid/804Broken Link, Exploit, Third Party Advisory, VDB Entry, Vendor Advisory

Timeline

Published: Nov 16, 1999
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-1999-1549?

How severe is CVE-1999-1549?

CVE-1999-1549 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.58% probability of exploitation in the next 30 days.

How do I fix CVE-1999-1549?

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-1999-1549?

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

Scan your code now

Source: NVD / NIST