# Firepower Threat Defense vulnerabilities > Firepower Threat Defense is made by Cisco. We track 220 published vulnerabilities listed under that exact name, across 380 versions. 11 of them are on the list of flaws known to be exploited, the newest added on 25 September 2025. Cisco lists newer releases under their own names, such as Firepower Threat Defense Software, so check those pages too. Canonical page: https://www.precursorintelligence.com/product/cisco/firepower_threat_defense ## At a glance - **Made by:** [Cisco](https://www.precursorintelligence.com/vendors/cisco) - **Published vulnerabilities:** 220 - **Known to be exploited:** 11 (listed under the name Firepower Threat Defense) - **Versions tracked:** 380 - **Most recently added to the known-exploited list:** [CVE-2025-20362](https://www.precursorintelligence.com/what-is/cve-2025-20362), 25 September 2025. We keep watching the list. ## Is Firepower Threat Defense listed under other names? Cisco also lists Firepower Threat Defense under more specific names, such as Firepower Threat Defense Software and Firepower Threat Defense for ISR. Flaws listed only under those names are counted on their own pages, not here. - [Firepower Threat Defense Software](https://www.precursorintelligence.com/product/cisco/firepower_threat_defense_software): 11 published vulnerabilities - [Firepower Threat Defense for ISR](https://www.precursorintelligence.com/product/cisco/firepower_threat_defense_for_isr): 2 published vulnerabilities - [Firepower Threat Defense Virtual](https://www.precursorintelligence.com/product/cisco/firepower_threat_defense_virtual): 2 published vulnerabilities ## Which versions of Firepower Threat Defense do the exploited flaws hit? Each exploited flaw lists the versions it affects, as published. "7.0.0 to before 7.0.8.1" means from 7.0.0 up to, but not including, 7.0.8.1. - [CVE-2025-20362](https://www.precursorintelligence.com/what-is/cve-2025-20362) (Cisco Secure Firewall Adaptive Security (ASA) Appliance and Secure Firewall Threat Defense (FTD) Missing Authorization Vulnerability): 7.0.0 to before 7.0.8.1, 7.1.0 to before 7.2.10.2, 7.3.0 to before 7.4.2.4, 7.6.0 to before 7.6.2.1, 7.7.0 to before 7.7.10.1 - [CVE-2025-20333](https://www.precursorintelligence.com/what-is/cve-2025-20333) (Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Buffer Overflow Vulnerability): 7.0.0 to before 7.0.8.1, 7.1.0 to before 7.2.9, 7.3.0 to before 7.4.2.4, 7.6.0 - [CVE-2020-3259](https://www.precursorintelligence.com/what-is/cve-2020-3259) (Cisco ASA and FTD Information Disclosure Vulnerability): 6.2.3 to before 6.2.3.16, 6.3.0 to before 6.3.0.6, 6.4.0 to before 6.4.0.9, 6.5.0 to before 6.5.0.5 - [CVE-2023-44487](https://www.precursorintelligence.com/what-is/cve-2023-44487) (HTTP/2 Rapid Reset Attack Vulnerability): before 7.4.2 - [CVE-2023-20269](https://www.precursorintelligence.com/what-is/cve-2023-20269) (Cisco Adaptive Security Appliance and Firepower Threat Defense Unauthorized Access Vulnerability): 6.2.3, 6.2.3.1, 6.2.3.2, 6.2.3.3, 6.2.3.4, 6.2.3.5, 6.2.3.6, 6.2.3.7, 6.2.3.8, 6.2.3.9, 6.2.3.10, 6.2.3.11, 6.2.3.12, 6.2.3.13, 6.2.3.14, 6.2.3.15, 6.2.3.16, 6.2.3.17, 6.2.3.18, 6.4.0, 6.4.0.1, 6.4.0.2, 6.4.0.3, 6.4.0.4, 6.4.0.5, 6.4.0.6, 6.4.0.7, 6.4.0.8, 6.4.0.9, 6.4.0.10, 6.4.0.11, 6.4.0.12, 6.4.0.13, 6.4.0.14, 6.4.0.15, 6.4.0.16, 6.6.0, 6.6.0.1, 6.6.1, 6.6.3, 6.6.4, 6.6.5, 6.6.5.1, 6.6.5.2, 6.6.7, 6.6.7.1, 6.7.0, 6.7.0.1, 6.7.0.2, 6.7.0.3, 7.0.0, 7.0.0.1, 7.0.1, 7.0.1.1, 7.0.2, 7.0.2.1, 7.0.3, 7.0.4, 7.0.5, 7.0.6, 7.1.0, 7.1.0.1, 7.1.0.2, 7.1.0.3, 7.2.0, 7.2.0.1, 7.2.1, 7.2.2, 7.2.3, 7.2.4, 7.2.4.1, 7.2.5, 7.3.0, 7.3.1, 7.3.1.1, 7.4.0 - [CVE-2021-44228](https://www.precursorintelligence.com/what-is/cve-2021-44228) (Apache Log4j2 Remote Code Execution Vulnerability): 6.2.3, 6.3.0, 6.4.0, 6.5.0, 6.6.0, 6.7.0, 7.0.0, 7.1.0 - [CVE-2018-0296](https://www.precursorintelligence.com/what-is/cve-2018-0296) (Cisco Adaptive Security Appliance (ASA) Denial-of-Service Vulnerability): 6.0 to before 6.1.0, 6.2.1 to before 6.2.2.3, 6.2.3, 6.2.3.1, 6.2.3-85.02, 6.2.3-851 - [CVE-2020-3580](https://www.precursorintelligence.com/what-is/cve-2020-3580) (Cisco ASA and FTD Cross-Site Scripting (XSS) Vulnerability): before 6.4.0.12, 6.5.0 to before 6.6.4, 6.7.0 to before 6.7.0.2 - [CVE-2020-3452](https://www.precursorintelligence.com/what-is/cve-2020-3452) (Cisco ASA and FTD Read-Only Path Traversal Vulnerability): 6.2.3 to before 6.2.3.16, 6.3.0 to before 6.3.0.6, 6.4.0 to before 6.4.0.10, 6.5.0 to before 6.5.0.5, 6.6.0 to before 6.6.0.1 2 more exploited flaws name Firepower Threat Defense without a version of its own (for example as the system other affected software runs on). They are in the list below. ## Which Firepower Threat Defense vulnerabilities are being exploited? 11 flaws are on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2025-20362](https://www.precursorintelligence.com/what-is/cve-2025-20362): Cisco Secure Firewall Adaptive Security (ASA) Appliance and Secure Firewall Threat Defense (FTD) Missing Authorization Vulnerability. Medium, CVSS 6.5, chance of use in 30 days 87%, known exploited since 25 September 2025. - [CVE-2025-20333](https://www.precursorintelligence.com/what-is/cve-2025-20333): Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Buffer Overflow Vulnerability. Critical, CVSS 9.9, chance of use in 30 days 71%, known exploited since 25 September 2025. - [CVE-2024-20359](https://www.precursorintelligence.com/what-is/cve-2024-20359): Cisco ASA and FTD Privilege Escalation Vulnerability. Medium, CVSS 6.0, chance of use in 30 days 19%, known exploited since 24 April 2024. - [CVE-2024-20353](https://www.precursorintelligence.com/what-is/cve-2024-20353): Cisco ASA and FTD Denial of Service Vulnerability. High, CVSS 8.6, chance of use in 30 days 71%, known exploited since 24 April 2024. - [CVE-2020-3259](https://www.precursorintelligence.com/what-is/cve-2020-3259): Cisco ASA and FTD Information Disclosure Vulnerability. High, CVSS 7.5, chance of use in 30 days 72%, known exploited since 15 February 2024. - [CVE-2023-44487](https://www.precursorintelligence.com/what-is/cve-2023-44487): HTTP/2 Rapid Reset Attack Vulnerability. High, CVSS 7.5, chance of use in 30 days >99%, known exploited since 10 October 2023. - [CVE-2023-20269](https://www.precursorintelligence.com/what-is/cve-2023-20269): Cisco Adaptive Security Appliance and Firepower Threat Defense Unauthorized Access Vulnerability. Medium, CVSS 5.0, chance of use in 30 days 25%, known exploited since 13 September 2023. - [CVE-2021-44228](https://www.precursorintelligence.com/what-is/cve-2021-44228): Apache Log4j2 Remote Code Execution Vulnerability. Critical, CVSS 10.0, chance of use in 30 days >99%, known exploited since 10 December 2021. - [CVE-2018-0296](https://www.precursorintelligence.com/what-is/cve-2018-0296): Cisco Adaptive Security Appliance (ASA) Denial-of-Service Vulnerability. High, CVSS 7.5, chance of use in 30 days >99%, known exploited since 3 November 2021. - [CVE-2020-3580](https://www.precursorintelligence.com/what-is/cve-2020-3580): Cisco ASA and FTD Cross-Site Scripting (XSS) Vulnerability. Medium, CVSS 6.1, chance of use in 30 days 86%, known exploited since 3 November 2021. - [CVE-2020-3452](https://www.precursorintelligence.com/what-is/cve-2020-3452): Cisco ASA and FTD Read-Only Path Traversal Vulnerability. High, CVSS 7.5, chance of use in 30 days >99%, known exploited since 3 November 2021. ## Which Firepower Threat Defense flaws are most likely to be used? Ranked by the latest exploit-likelihood forecast (the chance each flaw is used in an attack in the next 30 days): - [CVE-2023-44487](https://www.precursorintelligence.com/what-is/cve-2023-44487): >99%, High (CVSS 7.5), known exploited - [CVE-2020-3452](https://www.precursorintelligence.com/what-is/cve-2020-3452): >99%, High (CVSS 7.5), known exploited - [CVE-2018-0296](https://www.precursorintelligence.com/what-is/cve-2018-0296): >99%, High (CVSS 7.5), known exploited - [CVE-2020-3187](https://www.precursorintelligence.com/what-is/cve-2020-3187): 97%, Critical (CVSS 9.1) - [CVE-2025-20362](https://www.precursorintelligence.com/what-is/cve-2025-20362): 87%, Medium (CVSS 6.5), known exploited - [CVE-2018-0101](https://www.precursorintelligence.com/what-is/cve-2018-0101): 87%, Critical (CVSS 10.0) - [CVE-2020-3580](https://www.precursorintelligence.com/what-is/cve-2020-3580): 86%, Medium (CVSS 6.1), known exploited - [CVE-2020-3259](https://www.precursorintelligence.com/what-is/cve-2020-3259): 72%, High (CVSS 7.5), known exploited - [CVE-2025-20333](https://www.precursorintelligence.com/what-is/cve-2025-20333): 71%, Critical (CVSS 9.9), known exploited ## Questions ### How many vulnerabilities does Firepower Threat Defense have? We track 220 published vulnerabilities listed under the name Firepower Threat Defense, across 380 versions. The most recent Firepower Threat Defense flaw added to the known-exploited list is CVE-2025-20362, on 25 September 2025. ### Which Firepower Threat Defense vulnerabilities are being exploited? 11 are on the list of flaws known to be exploited. The most recently added are CVE-2025-20362, CVE-2025-20333 and CVE-2024-20359. ### Why are newer Firepower Threat Defense flaws missing from this page? Cisco also lists Firepower Threat Defense under more specific names, such as Firepower Threat Defense Software and Firepower Threat Defense for ISR. Flaws listed only under those names are counted on their own pages, not here. Open the release you run to see its own list. ### Which versions of Firepower Threat Defense do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2025-20362, affects 7.0.0 to before 7.0.8.1, 7.1.0 to before 7.2.10.2, 7.3.0 to before 7.4.2.4, 7.6.0 to before 7.6.2.1 and more. The versions for every exploited flaw are listed on this page. ### How do I get alerts for Firepower Threat Defense? Create a Precursor Intelligence account and track Firepower Threat Defense. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook. ## Running Firepower Threat Defense? Precursor Intelligence keeps checking for you: - **Tell us what you run.** Pick your software from a list, or let us work it out from your website. - **We match it to every flaw.** Over 400,000 published flaws, checked against your list. - **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it. - **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools. Start free (no card, nothing to install): https://www.precursorintelligence.com/register Book a demo: https://www.precursorintelligence.com/contact