CVE-2020-17144 Exploited in the Wild — Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 31

Vendor	Product	Version	Status
Microsoft	Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 31	0 to < publication	Affected

Known Exploited Vulnerability Sources

Catalogues that list this CVE as a known exploited vulnerability.

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

Source	Added
CISA First	2021-11-03 00:00 UTC
CVE	2026-06-09 18:50 UTC

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

Check back as sensor telemetry and scanner integrations are updated.

Virtual Patch

Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.

Not available

KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.

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CVSS Scores

CVSS v3.1 8.4 High

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

CVSS v2.0 6.0 Medium

AV:N/AC:M/Au:S/C:P/I:P/A:P

Exploitation Status

Exploited in the wild

Recorded 2021-11-03 00:00:00 UTC · CISA

Proof of concept available

Recorded 2020-12-09 10:30:16 UTC · GitHub

Weaknesses (CWE)

CWE-502

Deserialization of Untrusted Data

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

zcgonvh/CVE-2020-17144

github · Created 2020-12-09 20:57:16 UTC · 159 stars

weaponized tool for CVE-2020-17144

Airboi/CVE-2020-17144-EXP

github · Created 2020-12-09 10:30:16 UTC · 155 stars

Exchange2010 authorized RCE

Timeline

Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.

9 Jun 2026 18:50 UTC about 1 month ago

9 Jun 2026 18:50 UTC · about 1 month ago

KEV confirmed by CVE

Exploitation attested by an external source
3 Nov 2021 00:00 UTC over 4 years ago

3 Nov 2021 00:00 UTC · over 4 years ago

Added to CISA KEV

Listed in the CISA Known Exploited Vulnerabilities catalog
9 Dec 2020 23:36 UTC over 5 years ago

9 Dec 2020 23:36 UTC · over 5 years ago

CVE published

Vulnerability disclosed publicly
9 Dec 2020 10:30 UTC over 5 years ago

9 Dec 2020 10:30 UTC · over 5 years ago

Public PoC available

Public proof-of-concept code published
4 Aug 2020 00:00 UTC almost 6 years ago

4 Aug 2020 00:00 UTC · almost 6 years ago

CVE ID reserved

Identifier reserved by the CNA

Automate This Intelligence with the Pro API

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

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Pro API Example

GET /api/v2/pro/kevs/CVE-2020-17144

{
  "cve_id": "CVE-2020-17144",
  "title": "Microsoft Exchange Remote Code Execution Vulnerability",
  "affected_vendor": "Microsoft",
  "affected_product": "Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 31",
  "affected_versions": [
    { "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
  ],
  "confidence": "Confirmed",
  "cvss_score": 8.4,
  "epss_score": 0.36514,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "...": "Pro API fields" },
  "proof_of_concepts": [ "..." ],
  "scanner_integrations": [ "..." ]
}

The free JSON API returns basic KEV fields only. Confidence, telemetry, and artifact enrichment require Pro API access.

CVE-2020-17144

At a Glance

Affected Versions

CVE References

Recommended Actions