CISA KEV · Known exploitedHigh

CVE-2023-45727

North Grid Proself

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.

CVSS: 7.5
EPSS: 3.54%
CISA KEV: Listed
Published: 2023.10.18

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability3.54%

Technical severityCVSS 7.5

Vulnerability overview

Affected product and versions

Product: North Grid Proself
Affected versions: Ver5.62 and earlier, Ver1.65 and earlier, Ver1.08 and earlier, < 1.09, < 1.66, < 5.63
Fixed versions: 1.09, 1.66, 5.63

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

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

Due date: 2024.12.24

1
Identify
Confirm that North Grid Proself and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE: CWE-611
KEV added: 2024.12.03
Ransomware use: 미확인