Is CVE-2023-45727 in the CISA KEV catalog?

Yes. CVE-2023-45727 is on the CISA Known Exploited Vulnerabilities list, added 2024-12-03.

What is the CVSS severity of CVE-2023-45727?

CVE-2023-45727 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2023-45727?

CVE-2023-45727 has an EPSS score of 3.54% (88th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2023-45727

HIGHCISA KEVEPSS 88th pctl

7.5

CVSS v3

NVD

Description

Proself Enterprise/Standard Edition Ver5.62 and earlier, Proself Gateway Edition Ver1.65 and earlier, and Proself Mail Sanitize Edition Ver1.08 and earlier allow a remote unauthenticated attacker to conduct XML External Entity (XXE) attacks. By processing a specially crafted request containing malformed XML data, arbitrary files on the server containing account information may be read by the attacker.

CWE-611XML External Entity (XXE)

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

3.54%probability of exploitation in 30 days

88thpercentile

Elevated risk: more likely to be exploited than 88% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

North Grid Proself Improper Restriction of XML External Entity (XXE) Reference Vulnerability

North Grid Proself Enterprise/Standard, Gateway, and Mail Sanitize contain an improper restriction of XML External Entity (XXE) reference vulnerability, which could allow a remote, unauthenticated attacker to conduct an XXE attack.

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Remediation due: 2024-12-24

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 2025-10-24.