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CVE-2025-20362

Missing Authorization

CVSS 3.1 Medium 6.5Known exploited (CISA KEV)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Description

Update: On November 5, 2025, Cisco became aware of a new attack variant against devices running Cisco Secure ASA Software or Cisco Secure FTD Software releases that are affected by CVE-2025-20333 and CVE-2025-20362. This attack can cause unpatched devices to unexpectedly reload, leading to denial of service (DoS) conditions. Cisco strongly recommends that all customers upgrade to the fixed software releases that are listed in the Fixed Software ["#fs"] section of this advisory. A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to access restricted URL endpoints that are related to remote access VPN that should otherwise be inaccessible without authentication. This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker could exploit this vulnerability by sending crafted HTTP requests to a targeted web server on a device. A successful exploit could allow the attacker to access a restricted URL without authentication.

Official description from the CVE record, published by cisco. Copyright © 1999-2026 The MITRE Corporation. See /security/cve/legal for the CVE license. View the record on cve.org

Key data

CVSS 3.1 Medium 6.5

Score published by cisco in the CVE record.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

  • Attack vector: Network

    The vulnerable component can be reached over a network, possibly from the Internet.

  • Attack complexity: Low

    No special conditions are needed. The attack can be repeated at will.

  • Privileges required: None

    No account or privileges are needed.

  • User interaction: None

    No action from any user is needed.

  • Scope: Unchanged

    The impact stays within the vulnerable component.

  • Confidentiality impact: Low

    Limited effect on the secrecy of data.

  • Integrity impact: Low

    Limited effect on the trustworthiness of data.

  • Availability impact: None

    No effect on availability.

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at first.org/cvss.

EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.
Score
0.86688 (86.7% probability)
Percentile
99.7%
Scores of
Nov 10, 2026
Model
v2026.06.15

CISA Known Exploited Vulnerabilities

This CVE is listed in the CISA KEV catalog.
Name in the catalog
Cisco Secure Firewall Adaptive Security (ASA) Appliance and Secure Firewall Threat Defense (FTD) Missing Authorization Vulnerability
Added to the catalog
Sep 25, 2025
Federal due date
Sep 26, 2025

CISA assessment as of Sep 26, 2025

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.
Exploitation
Recorded by CISA as active
Automatable
yes
Technical impact
partial

Weakness (CWE)

CWE catalog version 5.0.
CWE names: Copyright © 2006-2026, The MITRE Corporation. See /security/cve/legal for the CWE license.

Affected products

Products listed in the CVE record, as the CNA published them.

  • Cisco Secure Firewall Adaptive Security Appliance (ASA) Software

    • affected: 9.8.1
    • affected: 9.8.1.5
    • affected: 9.8.1.7
    • affected: 9.8.2
    • affected: 9.8.2.8
    • affected: 9.8.2.14
    • affected: 9.8.2.15
    • affected: 9.8.2.17
    • affected: 9.8.2.20
    • affected: 9.8.2.24
    • affected: 9.8.2.26
    • affected: 9.8.2.28
    • affected: 9.8.2.33
    • affected: 9.8.2.35
    • affected: 9.8.2.38
    • affected: 9.8.3.8
    • affected: 9.8.3.11
    • affected: 9.8.3.14
    • affected: 9.8.3.16
    • affected: 9.8.3.18
    • affected: 9.8.3.21
    • affected: 9.8.3
    • affected: 9.8.3.26
    • affected: 9.8.3.29
    • affected: 9.8.4
    • and 210 more

  • Cisco Secure Firewall Threat Defense (FTD) Software

    • affected: 6.2.3
    • affected: 6.2.3.1
    • affected: 6.2.3.2
    • affected: 6.2.3.3
    • affected: 6.2.3.4
    • affected: 6.2.3.5
    • affected: 6.2.3.6
    • affected: 6.2.3.7
    • affected: 6.2.3.8
    • affected: 6.2.3.10
    • affected: 6.2.3.11
    • affected: 6.2.3.9
    • affected: 6.2.3.12
    • affected: 6.2.3.13
    • affected: 6.2.3.14
    • affected: 6.2.3.15
    • affected: 6.2.3.16
    • affected: 6.2.3.17
    • affected: 6.2.3.18
    • affected: 6.6.0
    • affected: 6.6.0.1
    • affected: 6.6.1
    • affected: 6.6.3
    • affected: 6.6.4
    • affected: 6.6.5
    • and 75 more

References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

Timeline

  1. ID reserved
  2. Added to CISA KEV
  3. Record published
  4. Record last updated

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About CubePath

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:15 UTC. Sources and licenses