CVE-2019-0797: Microsoft Win32k Privilege Escalation Vulnerability
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Microsoft Win32k contains a privilege escalation vulnerability when the Win32k component fails to properly handle objects in memory. Successful exploitation allows an attacker to execute code in kernel mode.
CSIRTS triage
- What
- Microsoft Win32k contains a privilege escalation vulnerability when the Win32k component fails to properly handle objects in memory.
- Who is affected
- Deployments of Microsoft Win32k.
- Urgency
- Remediation is urgent due to active exploitation and critical severity.
- Action
- Apply the latest security updates from Microsoft.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2019-0797
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Exploitation confirmedCVE-2019-0797Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 77% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2019-0797 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Microsoft Win32k Privilege
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- criticalexploitedCVE-2016-0165: Microsoft Win32k Privilege Escalation Vulnerabilitycisa-kev · 2023-06-22
- criticalexploitedCVE-2023-29336: Microsoft Win32K Privilege Escalation Vulnerabilitycisa-kev · 2023-05-09
- criticalexploitedCVE-2015-2360: Microsoft Win32k Privilege Escalation Vulnerabilitycisa-kev · 2022-05-25
- criticalexploitedCVE-2018-8589: Microsoft Win32k Privilege Escalation Vulnerabilitycisa-kev · 2022-05-23
- criticalexploitedCVE-2014-4113: Microsoft Win32k Privilege Escalation Vulnerabilitycisa-kev · 2022-05-04
- criticalexploitedCVE-2021-41357: Microsoft Win32k Privilege Escalation Vulnerabilitycisa-kev · 2022-04-25
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