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CVE-1999-0725

39
FAUCET Score

CVE-1999-0725 describes a vulnerability in Microsoft Internet Information Server (IIS) versions 3.0 and 4.0 when configured with Chinese, Korean, or Japanese as the default language. This flaw, known as "Double Byte Code Page," allows a remote attacker to view the source code of certain files. With a CVSS score of 7.1 (HIGH), it presents a critical risk due to its network-based attack vector and complete confidentiality impact, though it requires medium attack complexity. While no active exploitation is noted, public exploit code exists via ExploitDB, yet there is minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
3.0CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_information_server:3.0:*:*:ja:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_information_server:3.0:*:*:ko:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_information_server:3.0:*:*:zh:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_information_server:4.0:*:*:ja:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_information_server:4.0:*:*:ko:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.1HIGH

AV:N/AC:M/Au:N/C:C/I:N/A:N

Confidentiality Impact
COMPLETE
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
24.85%
Probability of exploitation in next 30 days
EPSS Percentile
97.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-19361 · Jun 24, 1999
This CVE's current EPSS score of 0.2485 is in the 90th percentile among its peer group of 8,920 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, 0.1 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 0.1 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/1999/ms99-022
exchange.xforce.ibmcloud.com / vulnerabilities/2302
Third Party AdvisoryVDB Entry
support.microsoft.com / default.aspx
securityfocus.com / bid/477
Third Party AdvisoryVDB Entry