CVE-2016-0099

HIGHNVD 7.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
7.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 37%CVSS: 7.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The Secondary Logon Service in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 does not properly process request handles, which allows local users to gain privileges via a crafted application, aka "Secondary Logon Elevation of Privilege Vulnerability."

CVSS v3
7.8
EG Score
9.0(high)
EG Risk
—
EPSS
98.4%
KEV
⚠ Exploited

Published

March 9, 2016

Last Modified

April 22, 2026

Advisory Details (7)

Auto-updated May 19, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Microsoft Security Bulletin MS16-032 - Important | Microsoft Learn

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-032
generic
http://www.securitytracker.com/id/1035210
generic
http://www.securityfocus.com/bid/84034
generic🟡 PoC Available

Microsoft Windows 7 < 10 / 2008 < 2012 (x86/x64) - Secondary Logon Handle Privilege Escalation (MS16-032) (Metasploit) - Windows local Exploit

https://www.exploit-db.com/exploits/40107/
generic🟡 PoC Available

Microsoft Windows 7 < 10 / 2008 < 2012 (x86/x64) - Local Privilege Escalation (MS16-032) - Windows local Exploit

https://www.exploit-db.com/exploits/39809/
generic🟡 PoC Available

Microsoft Windows 7 < 10 / 2008 < 2012 R2 (x86/x64) - Local Privilege Escalation (MS16-032) (PowerShell) - Windows local Exploit

https://www.exploit-db.com/exploits/39719/
generic🟡 PoC Available

Microsoft Windows 8.1/10 (x86) - Secondary Logon Standard Handles Missing Sanitization Privilege Escalation (MS16-032) - Windows_x86 local Exploit

https://www.exploit-db.com/exploits/39574/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 56× in last 7d / 213× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 396 total refreshes for this CVE.

  1. 2026-07-22 22:53 UTCGHSA enrichment
  2. 2026-07-22 22:00 UTCEG score recompute
  3. 2026-07-22 19:40 UTCCISA KEV update
  4. 2026-07-22 18:33 UTCGHSA enrichment
  5. 2026-07-22 14:12 UTCEG score recompute
  6. 2026-07-22 14:12 UTCGHSA enrichment
  7. 2026-07-22 14:04 UTCEPSS rescore
  8. 2026-07-22 09:51 UTCGHSA enrichment
  9. 2026-07-22 05:31 UTCGHSA enrichment
  10. 2026-07-22 01:10 UTCGHSA enrichment
  11. 2026-07-21 18:15 UTCEG score recompute
  12. 2026-07-21 18:15 UTCGHSA enrichment
  13. 2026-07-21 15:21 UTCEPSS rescore
  14. 2026-07-21 15:21 UTCEPSS rescore
  15. 2026-07-21 14:37 UTCCISA KEV update
  16. 2026-07-21 13:56 UTCGHSA enrichment
  17. 2026-07-21 09:36 UTCGHSA enrichment
  18. 2026-07-21 05:15 UTCGHSA enrichment
  19. 2026-07-21 00:53 UTCGHSA enrichment
  20. 2026-07-20 20:33 UTCEG score recompute
  21. 2026-07-20 20:33 UTCGHSA enrichment
  22. 2026-07-20 17:03 UTCEPSS rescore
  23. 2026-07-20 16:13 UTCGHSA enrichment
  24. 2026-07-20 11:53 UTCGHSA enrichment
  25. 2026-07-20 07:33 UTCGHSA enrichment
Show 75 more
  1. 2026-07-20 03:13 UTCGHSA enrichment
  2. 2026-07-19 22:53 UTCGHSA enrichment
  3. 2026-07-19 18:34 UTCGHSA enrichment
  4. 2026-07-19 14:14 UTCGHSA enrichment
  5. 2026-07-19 09:54 UTCGHSA enrichment
  6. 2026-07-19 05:34 UTCEG score recompute
  7. 2026-07-19 05:34 UTCGHSA enrichment
  8. 2026-07-19 02:26 UTCEPSS rescore
  9. 2026-07-19 02:26 UTCEPSS rescore
  10. 2026-07-19 01:14 UTCGHSA enrichment
  11. 2026-07-18 20:53 UTCGHSA enrichment
  12. 2026-07-18 16:33 UTCGHSA enrichment
  13. 2026-07-18 12:12 UTCEG score recompute
  14. 2026-07-18 12:12 UTCGHSA enrichment
  15. 2026-07-18 10:00 UTCEPSS rescore
  16. 2026-07-18 07:51 UTCGHSA enrichment
  17. 2026-07-18 03:31 UTCGHSA enrichment
  18. 2026-07-17 23:11 UTCGHSA enrichment
  19. 2026-07-17 18:51 UTCGHSA enrichment
  20. 2026-07-17 14:31 UTCGHSA enrichment
  21. 2026-07-17 10:11 UTCEG score recompute
  22. 2026-07-17 10:11 UTCGHSA enrichment
  23. 2026-07-17 05:50 UTCGHSA enrichment
  24. 2026-07-17 01:30 UTCGHSA enrichment
  25. 2026-07-16 21:11 UTCGHSA enrichment
  26. 2026-07-16 17:04 UTCCISA KEV update
  27. 2026-07-16 16:59 UTCEPSS rescore
  28. 2026-07-16 16:51 UTCGHSA enrichment
  29. 2026-07-16 12:19 UTCGHSA enrichment
  30. 2026-07-16 07:57 UTCGHSA enrichment
  31. 2026-07-16 03:38 UTCGHSA enrichment
  32. 2026-07-15 23:18 UTCGHSA enrichment
  33. 2026-07-15 18:59 UTCGHSA enrichment
  34. 2026-07-15 16:54 UTCEPSS rescore
  35. 2026-07-15 16:54 UTCEPSS rescore
  36. 2026-07-15 16:49 UTCCISA KEV update
  37. 2026-07-15 15:04 UTCCISA KEV update
  38. 2026-07-15 14:38 UTCGHSA enrichment
  39. 2026-07-15 10:19 UTCGHSA enrichment
  40. 2026-07-15 05:59 UTCGHSA enrichment
  41. 2026-07-15 01:56 UTCEPSS rescore
  42. 2026-07-15 01:38 UTCGHSA enrichment
  43. 2026-07-14 21:19 UTCGHSA enrichment
  44. 2026-07-14 18:05 UTCCISA KEV update
  45. 2026-07-14 16:58 UTCGHSA enrichment
  46. 2026-07-14 12:37 UTCGHSA enrichment
  47. 2026-07-14 08:17 UTCGHSA enrichment
  48. 2026-07-14 03:57 UTCGHSA enrichment
  49. 2026-07-13 23:38 UTCGHSA enrichment
  50. 2026-07-13 19:18 UTCGHSA enrichment
  51. 2026-07-13 17:07 UTCCISA KEV update
  52. 2026-07-13 14:58 UTCGHSA enrichment
  53. 2026-07-13 10:38 UTCGHSA enrichment
  54. 2026-07-13 06:16 UTCGHSA enrichment
  55. 2026-07-13 01:55 UTCGHSA enrichment
  56. 2026-07-12 21:35 UTCGHSA enrichment
  57. 2026-07-12 17:15 UTCGHSA enrichment
  58. 2026-07-12 12:54 UTCGHSA enrichment
  59. 2026-07-12 08:34 UTCGHSA enrichment
  60. 2026-07-12 05:42 UTCEPSS rescore
  61. 2026-07-12 04:14 UTCGHSA enrichment
  62. 2026-07-11 23:52 UTCGHSA enrichment
  63. 2026-07-11 19:31 UTCGHSA enrichment
  64. 2026-07-11 15:11 UTCGHSA enrichment
  65. 2026-07-11 10:51 UTCGHSA enrichment
  66. 2026-07-11 08:23 UTCEPSS rescore
  67. 2026-07-11 06:31 UTCGHSA enrichment
  68. 2026-07-11 02:11 UTCGHSA enrichment
  69. 2026-07-10 21:52 UTCGHSA enrichment
  70. 2026-07-10 17:52 UTCCISA KEV update
  71. 2026-07-10 17:32 UTCGHSA enrichment
  72. 2026-07-10 13:11 UTCGHSA enrichment
  73. 2026-07-10 08:51 UTCGHSA enrichment
  74. 2026-07-10 04:31 UTCGHSA enrichment
  75. 2026-07-10 00:06 UTCGHSA enrichment

Publicly available exploits

(6 references)

Working exploit code is in the public domain (1 Metasploit module) (1 GitHub PoC) (4 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCzcgonvh/MS16-032
    First seen Mar 15, 2017

    MS16-032(CVE-2016-0099) for SERVICE ONLY

    Open source ↗
  • Exploit-DBEDB-40107✓ verified
    First seen Jul 13, 2016

    Microsoft Windows 7 < 10 / 2008 < 2012 (x86/x64) - Secondary Logon Handle Privilege Escalation (MS16-032) (Metasploit)

    Open source ↗
  • Exploit-DBEDB-39809✓ verified
    First seen Apr 25, 2016

    Microsoft Windows 7 < 10 / 2008 < 2012 (x86/x64) - Local Privilege Escalation (MS16-032)

    Open source ↗
  • Exploit-DBEDB-39719✓ verified
    First seen Apr 21, 2016

    Microsoft Windows 7 < 10 / 2008 < 2012 R2 (x86/x64) - Local Privilege Escalation (MS16-032) (PowerShell)

    Open source ↗
  • Exploit-DBEDB-39574✓ verified
    First seen Mar 21, 2016

    Microsoft Windows 8.1/10 (x86) - Secondary Logon Standard Handles Missing Sanitization Privilege Escalation (MS16-032)

    Open source ↗
  • Metasploitexploit/windows/local/ms16_032_secondary_logon_handle_privesc✓ verified
    First seen Mar 21, 2016

    MS16-032 Secondary Logon Handle Privilege Escalation

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2016-0099?
CVE-2016-0099 is a high vulnerability published on March 9, 2016. The Secondary Logon Service in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 does not properly process request handles, which allows local users to gain privileges via a…
When was CVE-2016-0099 disclosed?
CVE-2016-0099 was first published in the National Vulnerability Database on March 9, 2016, with the most recent update on April 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-0099 actively exploited?
Yes. CISA added CVE-2016-0099 to the Known Exploited Vulnerabilities catalog on March 3, 2022, affecting Microsoft Windows. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2016-0099?
CVE-2016-0099 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2016-0099?
CVE-2016-0099 affects Microsoft Windows. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2016-0099?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-0099, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2016-0099

Explore →

Is Your Infrastructure Affected by CVE-2016-0099?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs