CVE-2022-41080: Microsoft Exchange Server Privilege Escalation Vulnerability
- Is it exploited?
Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 10 Jan 2023, 62 days after the CVE record was published.
- How likely is exploitation in the next 30 days?
- 77.3%
EPSS score, percentile 99.6 of all scored records
- How severe?
- 8.8 High
CVSS v3.1 base score, given by the CNA
- What should I do?
Required action (CISA), due 31 Jan 2023: Apply updates per vendor instructions.
- Which versions are affected?
Affected: 15.00.0 up to, not including, 15.00.1497.044; 15.0.0 up to, not including, 15.01.2375.037; 15.01.0 up to, not including, 15.01.2507.016; 15.02.0 up to, not including, 15.02.0986.036; 15.02.0 up to, not including, 15.02.1118.020
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
What to do
Required action, set by CISA
Apply updates per vendor instructions.
CISA due date for this action: 31 January 2023.
Advisories and patches
Linked from CISA's catalog entry
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2022-41080
- https://nvd.nist.gov/vuln/detail/CVE-2022-41080
Affected products and versions
As listed in the CVE record.
| Status | Versions |
|---|---|
| Affected | 15.00.0 up to, not including, 15.00.1497.044 |
| Status | Versions |
|---|---|
| Affected | 15.0.0 up to, not including, 15.01.2375.037 |
| Status | Versions |
|---|---|
| Affected | 15.01.0 up to, not including, 15.01.2507.016 |
| Status | Versions |
|---|---|
| Affected | 15.02.0 up to, not including, 15.02.0986.036 |
| Status | Versions |
|---|---|
| Affected | 15.02.0 up to, not including, 15.02.1118.020 |
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
About this vulnerability
Microsoft Exchange Server contains an unspecified vulnerability that allows for privilege escalation. This vulnerability is chainable with CVE-2022-41082, which allows for remote code execution.
Summary: CISA's KEV catalog, as of 28 Oct 2026.
- CISA added CVE-2022-41080 to its Known Exploited Vulnerabilities (KEV) catalog on 10 Jan 2023.
- CISA marks it as known to be used in ransomware campaigns.
- The due date CISA sets for the required action is 31 Jan 2023.
- The CVE record was published on 9 Nov 2022, 62 days before it was added to KEV.
- The CVE record carries a CVSS v3.1 base score of 8.8 (High), given by its CNA.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 77.3% (percentile 99.6), as of 28 Oct 2026.
- CISA's SSVC assessment in the CVE record: exploitation active, automatable no, technical impact total.
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.
Description
Microsoft Exchange Server Elevation of Privilege Vulnerability
Microsoft Exchange Server Elevation of Privilege Vulnerability
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
Timeline
| Date | Event |
|---|---|
| 9 Nov 2022 | CVE record published |
| 10 Jan 2023 | Added to CISA KEV |
| 31 Jan 2023 | CISA due date for the required action |
| 10 Aug 2026 | CVE record last updated |
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