Is CVE-2023-28503 in the CISA KEV catalog?

No. CVE-2023-28503 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-28503?

CVE-2023-28503 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2023-28503?

CVE-2023-28503 has an EPSS score of 62.14% (99th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2023-28503

CRITICALEPSS 99th pctl

9.8

CVSS v3

NVD

Description

Rocket Software UniData versions prior to 8.2.4 build 3003 and UniVerse versions prior to 11.3.5 build 1001 or 12.2.1 build 2002 suffer from an authentication bypass vulnerability, where a special username with a deterministic password can be leveraged to bypass authentication checks and execute OS commands as the root user.

CWE-798Hard-coded Credentials CWE-287Improper Authentication

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

62.14%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-02-18.