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VulnerabilityCVE-2022-41080Published 2022-11-09

CVE-2022-41080 — Microsoft Exchange Server 2013 Cumulative Update 23

highCISA KEVRansomwarePublic exploit2 PoC repos

As of 2026-11-05, CVE-2022-41080 is a HIGH-severity vulnerability in Microsoft Exchange Server 2013 Cumulative Update 23, CVSS v3.1 8.8, EPSS 77.3% (99.5th percentile). It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-01-10), with a US federal remediation deadline of 2023-01-31, and CISA links it to known ransomware campaigns. Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2022-41080, most recently “PLAY Ransomware (PlayCrypt) - Reverse Engineering Analysis and Big Game Hunting Operations”.

CVSS v3.1
8.8/10High
EPSS
77.3%Higher than 99.5% of scored CVEs
CISA KEV
ListedAdded · due 2023-01-31
Tracked threats
1Campaigns referencing it
Priority
10/10Threadlinqs triage score
Published
Updated 2026-08-10
CVSS v3.1 8.8 (HIGH) · EPSS 77.3% (higher than 99.5% of all scored CVEs) · Priority 10/10 · Published 2022-11-09

Last updated:

What is CVE-2022-41080?

Microsoft Exchange Server Elevation of Privilege Vulnerability

Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 5 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 1461 days ago.

Severity and exploitation probability

CVSS v3.1 base score
8.8 — HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
EPSS (FIRST)
77.3% probability of exploitation in the next 30 days, higher than 99.5% of all scored CVEs
CISA KEV
Listed since 2023-01-10, federal remediation deadline 2023-01-31 — used in known ransomware campaigns
Threadlinqs priority
10/10 — CISA lists it as used in ransomware, which Threadlinqs scores at the maximum
Published
2022-11-09, last modified 2026-08-10

Is CVE-2022-41080 being exploited?

CISA added CVE-2022-41080 to the Known Exploited Vulnerabilities catalog on 2023-01-10, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2023-01-31 under BOD 22-01. CISA flags the vulnerability as one used in known ransomware campaigns. Weaponised exploit code for CVE-2022-41080 is publicly available. 2 public proof-of-concept repositories are tracked for this identifier. It currently carries a trending score of 48 in the Threadlinqs vulnerability feed.

Affected products and versions

  • Microsoft: Exchange Server 2013 Cumulative Update 23, Exchange Server 2016 Cumulative Update 22, Exchange Server 2016 Cumulative Update 23, Exchange Server 2019 Cumulative Update 11, Exchange Server 2019 Cumulative Update 12

How to fix CVE-2022-41080

The record marks a vendor fix as available for CVE-2022-41080. Patch reference: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-41080. Because CVE-2022-41080 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2023-01-31. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

Threat activity tracking CVE-2022-41080

1 tracked threat in the Threadlinqs corpus references CVE-2022-41080, either in the campaign’s CVE list or as an indicator on the campaign record.

Sources

Enriched from CVE.org, NVD, FIRST EPSS, CISA KEV, public proof-of-concept repositories. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.

Vendor advisory and patch