CVE-2019-0543 kev+ ransomware in the critical feed json
An elevation of privilege vulnerability exists when Windows improperly handles authentication requests, aka "Microsoft Windows Elevation of…
published 2019-01-08 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-1314
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Exploited
- added 2022-03-15, used in ransomware
- epss
- 4.7%
- EPSS 4.7% chance of exploitation in 30 days, percentile 91%
- public exploits
- 1
- Exploit-DB
Summary
An elevation of privilege vulnerability exists when Windows improperly handles authentication requests, aka "Microsoft Windows Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2019, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.
Patch / fix
cisa required action Apply updates per vendor instructions.
Timeline
- Published
- First public exploit (EDB-46156)
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 4 y ago
- Patch by
- 2022-04-05 (4 y ago)
- Ransomware
- Known to be used in ransomware campaigns
- Required action
- Apply updates per vendor instructions.
- Vendor, product
- Microsoft, Windows
- CISA name
- Microsoft Windows Privilege Escalation Vulnerability
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- total
- Assessed
- 21 mo ago
Exploit prediction
4.68% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-46156 Microsoft Windows 10 - SSPI Network Authentication Session 0 Privilege Escalation local, 2019-01-14
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2019-0543
patch, vendor-advisory
-
exploit-db.com
/exploits/46156/
exploit, third-party-advisory, vdb-entry
-
securityfocus.com
/bid/106408
vdb-entry, broken-link, third-party-advisory
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0543
government-resource, us-government-resource
Sources
- CVE List CVE-2019-0543
- NVD CVE-2019-0543
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.