KEV Intelligence

Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2023-45727

Proself Enterprise/Standard Edition

North Grid Corporation / Proself Enterprise/Standard Edition · 0 to <= 5.62

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Severity
CVSS 7.5 · High
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
3.5%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2023-45727 is an unauthenticated vulnerability affecting North Grid Corporation Proself Enterprise/Standard Edition and 2 other products. Proself Enterprise/Standard Edition Ver5.62 and earlier, Proself Gateway...

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.

Who is affected?

North Grid Corporation / Proself Enterprise/Standard Edition 0 to <= 5.62.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Proself Enterprise/Standard Edition

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.

Vendor Product Affected Status
northgrid proself Through 5.62 Affected
northgrid proself Through 1.65 Affected
northgrid proself Through 5.62 Affected
northgrid proself Through 1.08 Affected
North Grid Corporation Proself Enterprise/Standard Edition Ver5.62 and earlier Affected
North Grid Corporation Proself Gateway Edition Ver1.65 and earlier Affected
North Grid Corporation Proself Mail Sanitize Edition Ver1.08 and earlier Affected
Published
18 Oct 2023
Exploitation Reported
03 Dec 2024
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

cisa

CVE References

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 03 Dec 2024

Independent exploitation attestation added to the KEV Intelligence record.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

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Source Added
CISA First 2024-12-03 00:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
0
User-Agents
0

Raw values available in Pro and Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

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

EPSS

3.5%

Weaknesses

Improper Restriction of XML External Entity Reference CWE-611

Timeline

From disclosure to observed exploitation

  1. Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  2. CVE published

    Vulnerability disclosed publicly

  3. CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2023-45727

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2023-45727",
  "confidence": "Confirmed",
  "cvss_score": 7.5,
  "cvss_estimated": false,
  "epss_score": 0.03542,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

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