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CVE-2023-4501

27
FAUCET Score

CVE-2023-4501 is a critical authentication bypass vulnerability affecting OpenText (Micro Focus) Visual COBOL, COBOL Server, Enterprise Developer, and Enterprise Server versions 7.0 (patch 19, 20), 8.0 (patch 8, 9), and 9.0 (patch 1) when configured for LDAP authentication. This flaw allows an attacker to authenticate with any valid username using an incorrect password, or potentially with an invalid username, leading to full user impersonation. With a CVSS score of 9.8 (CRITICAL), the vulnerability has a network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While there is no known active exploitation, public exploit code, or Metasploit/Nuclei modules, the vulnerability has garnered some community discussion, with one mention advising users to apply patches and consider migrating from COBOL.

Impacted Technologies

VendorProductVersion(s)CPE
7.0CPE matchmatch criteria
cpe:2.3:a:microfocus:cobol_server:7.0:patch_update_19:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:a:microfocus:cobol_server:7.0:patch_update_20:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:a:microfocus:cobol_server:8.0:patch_update_8:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:a:microfocus:cobol_server:8.0:patch_update_9:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:a:microfocus:cobol_server:9.0:patch_update_1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.62%
Probability of exploitation in next 30 days
EPSS Percentile
46.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0062 is in the 27th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

portal.microfocus.com / s/article/KM000021287
Vendor Advisory