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CVE-1999-0871

16
FAUCET Score

CVE-1999-0871 describes a cross-frame scripting vulnerability in Microsoft Internet Explorer versions 4.0 and 4.01, allowing a remote attacker to read local files. This vulnerability has a low CVSS score of 2.6, indicating a network-based attack with high access complexity and a potential impact limited to confidentiality. There is no evidence of active exploitation, and no public exploit code is available in Metasploit, Nuclei, or ExploitDB. Furthermore, the vulnerability has received no community discussion or media coverage, suggesting a low level of public awareness and interest.

Impacted Technologies

VendorProductVersion(s)CPE
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:*:*:*:*:*:*:*

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
12.16%
Probability of exploitation in next 30 days
EPSS Percentile
95.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1216 is in the 96th percentile among its peer group of 1,506 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/1998/ms98-013
exchange.xforce.ibmcloud.com / vulnerabilities/3668
osvdb.org / 7837