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CVE-1999-1549

20
FAUCET Score

CVE-1999-1549 describes a critical vulnerability in Lynx 2.x where the browser fails to properly differentiate between internal and external HTML. This flaw allows a local attacker to read sensitive hidden form values from temporary files and manipulate the user's configuration by crafting a malicious LYNXOPTIONS: URL, potentially leading to arbitrary command execution. With a CVSS score of 7.8 (High), the vulnerability has a low attack complexity and requires local access, but can result in high impact to confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this older CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.7CPE matchmatch criteria
cpe:2.3:a:lynx_project:lynx:2.7:*:*:*:*:*:*:*
2.8CPE matchmatch criteria
cpe:2.3:a:lynx_project:lynx:2.8:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.58%
Probability of exploitation in next 30 days
EPSS Percentile
44.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0058 is in the 83rd percentile among its peer group of 16,994 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

marc.info
ExploitMailing List
securityfocus.com / bid/804
Broken LinkExploitThird Party AdvisoryVDB EntryVendor Advisory