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CVE-2000-0439

14
FAUCET Score

CVE-2000-0439 describes an "Unauthorized Cookie Access" vulnerability affecting Microsoft Internet Explorer versions 4.0 and 5.0. A malicious website could exploit this by crafting a URL with a target domain and escaped characters to steal client cookies from that domain. This vulnerability has a low CVSS score of 2.6, indicating a network-based attack with high access complexity and potential for partial confidentiality impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this older vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
3.0CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:3.0:*:*:*:*:*:*:*
3.2CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:3.2:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:4.0:*:*:*:*:*:*:*
4.0.1CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:4.0.1:*:*:*:*:*:*:*
4.1CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:4.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.6LOW

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
4.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
6.26%
Probability of exploitation in next 30 days
EPSS Percentile
92.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0626 is in the 92nd percentile among its peer group of 1,505 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.3 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

docs.microsoft.com / en-us/security-updates/securitybulletins/2000/ms00-033
exchange.xforce.ibmcloud.com / vulnerabilities/4447
osvdb.org / 1326
securityfocus.com / bid/1194
securityfocus.com / templates/archive.pike
securityfocus.com / templates/archive.pike