CVE-2020-3452

CRITICALNVD 7.59.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.5 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 3 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 100%CVSS: 7.5Exploit: cisa kev · ssvc active · epss top5pct · epss high · public exploitExposed: 0

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

A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct directory traversal attacks and read sensitive files on a targeted system. The vulnerability is due to a lack of proper input validation of URLs in HTTP requests processed by an affected device. An attacker could exploit this vulnerability by sending a crafted HTTP request containing directory traversal character sequences to an affected device. A successful exploit could allow the attacker to view arbitrary files within the web services file system on the targeted device. The web services file system is enabled when the affected device is configured with either WebVPN or AnyConnect features. This vulnerability cannot be used to obtain access to ASA or FTD system files or underlying operating system (OS) files.

CVSS v3
7.5
EG Score
9.0(high)
EG Risk
96(Attend)
EG Risk 96/100SSVC: 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%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
100%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

July 22, 2020

Last Modified

October 28, 2025

Advisory Details (4)

Auto-updated Jun 4, 2026
No patch confirmed yet.
generic

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Read-Only Path Traversal Vulnerability

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ro-path-KJuQhB86
generic

Packet Storm

http://packetstormsecurity.com/files/160497/Cisco-ASA-9.14.1.10-FTD-6.6.0.1-Path-Traversal.html
generic

Packet Storm

http://packetstormsecurity.com/files/159523/Cisco-ASA-FTD-9.6.4.42-Path-Traversal.html
generic

Packet Storm

http://packetstormsecurity.com/files/158646/Cisco-ASA-FTD-Remote-File-Disclosure.html

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 29× in last 7d / 176× 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 366 total refreshes for this CVE.

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

Publicly available exploits

(10 references)

Working exploit code is in the public domain (7 GitHub PoCs) (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCfuzzlove/Cisco-ASA-FTD-Web-Services-Traversal
    First seen Feb 3, 2021

    CVE-2020-3452 - Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) traversal

    Open source ↗
  • GitHub PoCdarklotuskdb/CISCO-CVE-2020-3452-Scanner-Exploiter
    First seen Jan 5, 2021

    CISCO CVE-2020-3452 Scanner & Exploiter

    Open source ↗
  • Exploit-DBEDB-49262
    First seen Dec 15, 2020

    Cisco ASA 9.14.1.10 and FTD 6.6.0.1 - Path Traversal (2)

    Open source ↗
  • GitHub PoCcygenta/CVE-2020-3452
    First seen Dec 13, 2020
    Open source ↗
  • GitHub PoCgrim3/CVE-2020-3452
    First seen Nov 18, 2020

    CVE-2020-3452

    Open source ↗
  • Exploit-DBEDB-48871
    First seen Oct 12, 2020

    Cisco ASA and FTD 9.6.4.42 - Path Traversal

    Open source ↗
  • GitHub PoC3ndG4me/CVE-2020-3452-Exploit
    First seen Sep 28, 2020

    Just basic scanner abusing CVE-2020-3452 to enumerate the standard files accessible in the Web Directory of the CISCO ASA applicances.

    Open source ↗
  • GitHub PoCmurataydemir/CVE-2020-3452
    First seen Aug 13, 2020

    [CVE-2020-3452] Cisco Adaptive Security Appliance (ASA) & Cisco Firepower Threat Defense (FTD) Web Service Read-Only Directory Traversal

    Open source ↗
  • GitHub PoC0x5ECF4ULT/CVE-2020-3452
    First seen Aug 1, 2020

    CVE-2020-3452 exploit

    Open source ↗
  • Exploit-DBEDB-48722
    First seen Jul 28, 2020

    Cisco Adaptive Security Appliance Software 9.11 - Local File Inclusion

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2020-3452?
CVE-2020-3452 is a critical vulnerability published on July 22, 2020. A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct directory traversal attacks and read sensitive files on a targeted system. The vulnerability…
When was CVE-2020-3452 disclosed?
CVE-2020-3452 was first published in the National Vulnerability Database on July 22, 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-2020-3452 actively exploited?
Yes. CISA added CVE-2020-3452 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD). KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2020-3452?
CVE-2020-3452 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2020-3452?
CVE-2020-3452 affects Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD). 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-2020-3452?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-3452, 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-2020-3452

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