CVE-1999-0725

Internet Information Server vulnerability

CVSS

7.1

EPSS

24.9%

EPSS pct

98th

Exploited

No known

When IIS is run with a default language of Chinese, Korean, or Japanese, it allows a remote attacker to view the source code of certain files, a.k.a. "Double Byte Code Page".

Affected vendor

Microsoft

Affected product

Internet Information Server

CVSS vector

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

Weakness type (CWE)

CWE-16

Published

1999-08-19

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring no authentication. Successful exploitation leads to complete impact to confidentiality.

Its EPSS score of 24.9% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-1999-0725

Confirm whether Microsoft Internet Information Server is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-1999-0725.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-1999-0725

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-1999-0725 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Isa Server vulnerability