How severe is CVE-2019-1322?

CVE-2019-1322 has a CVSS score of 7.8/10, rated HIGH. Immediate patching is strongly recommended.

Which products are affected by CVE-2019-1322?

CVE-2019-1322 affects the following products: microsoft windows 10 1803, microsoft windows 10 1809, microsoft windows 10 1903, microsoft windows server 1803, microsoft windows server 1903, microsoft windows server 2019.

How do I patch CVE-2019-1322?

No patch has shipped for CVE-2019-1322 yet — track the microsoft windows 10 1803 advisory for a fixed release and apply the workarounds below in the meantime.

How do I detect CVE-2019-1322 across my infrastructure?

Inventory every microsoft windows 10 1803 deployment and check each version against the affected-products list above.

How do I mitigate CVE-2019-1322 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Is CVE-2019-1322 actively exploited in the wild?

Yes. There are 7 known exploit references for CVE-2019-1322, including 2 documented proof-of-concept exploits on Exploit-DB and 5 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2019-1322?

CVE-2019-1322 has an EPSS (Exploit Prediction Scoring System) score of 19.2%, placing it in the 97th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score warrants monitoring and prompt remediation.

Is CVE-2019-1322 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2019-1322 (Microsoft Windows Privilege Escalation Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2022-03-15. CISA required all US federal civilian agencies to remediate this vulnerability by 2022-04-05. The required action was: Apply updates per vendor instructions. This CVE has been used in known ransomware campaigns. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

Which products and versions are affected by CVE-2019-1322?

CVE-2019-1322 affects microsoft windows 10 1803; microsoft windows 10 1809; microsoft windows 10 1903; microsoft windows server 1803, and 2 more product(s). Check the affected-products list on this page against your deployed version to confirm exposure.

Is there exploit tooling available for CVE-2019-1322?

6 Metasploit modules reference CVE-2019-1322, which lowers the barrier to weaponization. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2019-1322 published, and has it been updated?

CVE-2019-1322 was published on October 10, 2019 and was last updated on June 17, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🛡️

CISA KEV · ACTIVELY EXPLOITED

HIGH severity

CVE-2019-1322 — Windows 10 1803

HIGH

CVE-2019-1322 is a high-severity (CVSS 7.8) vulnerability in microsoft windows 10 1803. It is in CISA's Known Exploited Vulnerabilities catalog (added 2022-03-15) and has been used in ransomware campaigns — treat it as actively exploited and patch now. No vendor fix is recorded yet; mitigation options are listed below.

An elevation of privilege vulnerability exists when Windows improperly handles authentication requests, aka 'Microsoft Windows Elevation of Privilege Vulnerability'. This CVE ID is…

Published

Oct 10, 2019

Updated

Jun 17, 2026

Affected

6 products

Patched

See advisory

Exploits

7 known

Exploitation data as of Oct 23, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2022-03-15 — including use in ransomware campaigns. Federal agencies were required to remediate by 2022-04-05.
A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2019-1322.

EPSS Exploitation Probability

via FIRST.org ↗

19.2%probability of exploitation in next 30 days

Moderate Risk0.00%

Lower risk than most CVEs97th percentile — riskier than 97% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2019-1322 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 394,803 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Counts from FIRST.org, log-scaled.

Description

An elevation of privilege vulnerability exists when Windows improperly handles authentication requests, aka 'Microsoft Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-1320, CVE-2019-1340.

Affected Products

6 products · 12 configurations

windows 10 1803microsoft

all

windows 10 1809microsoft

all

windows 10 1903microsoft

all

windows server 1803microsoft

all

windows server 1903microsoft

all

windows server 2019microsoft

all

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-47805localwindows✓ Verified

Microsoft UPnP - Local Privilege Elevation (Metasploit)

by Metasploit · Dec 30, 2019

Exploit-DB Source

EDB-47684localwindows

Microsoft Windows 10 Build 1803 < 1903 - 'COMahawk' Local Privilege Escalation

by TomahawkAPT69 · Nov 14, 2019

Exploit-DB Source

Detection & mitigation playbook

Vendor / appliance

Detect
Inventory every microsoft windows 10 1803 deployment and check each version against the affected-products list above.
Remediation status
No patch has shipped for CVE-2019-1322 yet — track the microsoft windows 10 1803 advisory for a fixed release and apply the workarounds below in the meantime.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Frequently Asked Questions

O3 Security · Runtime Protection

Is CVE-2019-1322 being exploited in your environment?

Detect and block the exploit chain at execution, on systems you cannot patch yet.

Protect my workloads How runtime protection works