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CVE-1999-0236

46
FAUCET Score

CVE-1999-0236 describes a vulnerability in NCSA and Apache httpd servers where a misconfigured ScriptAlias directory allowed remote attackers to read the source code of CGI programs. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating a network-based attack with low complexity, requiring no privileges or user interaction, and leading to high confidentiality impact. While not actively exploited in the wild or listed on the KEV catalog, public exploit code exists (EDB-20595), though there is no significant community discussion or media coverage surrounding this decades-old flaw.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0CPE matchmatch criteria
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:illinois:ncsa_httpd:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
25.79%
Probability of exploitation in next 30 days
EPSS Percentile
97.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-20595 · Sep 25, 1999
This CVE's current EPSS score of 0.2579 is in the 96th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

Patch Available

Vendor Patches (4)

microsoftpatch availablevia msrc
Product: cm1 httpd 2.4.46-2 on CBL Mariner 1.0Fixed in: 2.4.46-2
microsoftpatch availablevia msrc
Product: 19248-16820Fixed in: 2.4.46-2
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 x64Fixed in: 2.4.46-2
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 ARMFixed in: 2.4.46-2

Vendor Advisories (2)

microsoft2020-Sep/CVE-1999-0236

CVE-1999-0236

Sep 8, 2020
microsoft1999-Sep/CVE-1999-0236Important

ScriptAlias directory in NCSA and Apache httpd allowed attackers to read CGI programs.

Sep 2, 1999

References

exchange.xforce.ibmcloud.com / vulnerabilities/CVE-1999-0236
Third Party Advisory