CVE-2020-3433

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 2022-10-24), 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: 10%CVSS: 7.8Exploit: NoneExposed: 0

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

A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by sending a crafted IPC message to the AnyConnect process. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system.

CVSS v3
7.8
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
95.1%
KEV
⚠ Exploited

Published

August 17, 2020

Last Modified

October 28, 2025

Advisory Details (3)

Auto-updated Jun 3, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3433
generic🔴 Active Exploitation

Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dll-F26WwJW
generic

Packet Storm

http://packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-Escalation.html

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 60× in last 7d / 236× 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 430 total refreshes for this CVE.

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

Publicly available exploits

(2 references)

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

  • GitHub PoCgoichot/CVE-2020-3433
    First seen Sep 25, 2020

    PoCs and technical analysis of three vulnerabilities found on Cisco AnyConnect for Windows: CVE-2020-3433, CVE-2020-3434 and CVE-2020-3435

    Open source ↗
  • Metasploitexploit/windows/local/anyconnect_lpe✓ verified
    First seen Aug 5, 2020

    Cisco AnyConnect Privilege Escalations (CVE-2020-3153 and CVE-2020-3433)

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2020-3433?
CVE-2020-3433 is a high vulnerability published on August 17, 2020. A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows…
When was CVE-2020-3433 disclosed?
CVE-2020-3433 was first published in the National Vulnerability Database on August 17, 2020, with the most recent update on October 28, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-3433 actively exploited?
Yes. CISA added CVE-2020-3433 to the Known Exploited Vulnerabilities catalog on October 24, 2022, affecting Cisco AnyConnect Secure. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2020-3433?
CVE-2020-3433 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-2020-3433?
CVE-2020-3433 affects Cisco AnyConnect Secure. 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-2020-3433?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-3433, 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-2020-3433

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