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PatchSiren cyber security CVE debrief

CVE-2024-20359 Cisco CVE debrief

CVE-2024-20359 is a Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) privilege escalation vulnerability that CISA added to its Known Exploited Vulnerabilities catalog on 2024-04-24. Because it is listed in KEV, defenders should treat it as actively exploited or otherwise confirmed in the wild and prioritize remediation quickly. CISA’s required action is to apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Vendor
Cisco
Product
Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)
CVSS
MEDIUM 6
CISA KEV
Listed
Original CVE published
2024-04-24
Original CVE updated
2024-04-24
Advisory published
2024-04-24
Advisory updated
2024-04-24

Who should care

Network security teams, firewall/VPN administrators, and incident responders responsible for Cisco ASA or Cisco FTD deployments should prioritize this issue, especially where the devices are exposed to the internet or used for remote access.

Technical summary

The supplied corpus identifies the issue as a privilege escalation vulnerability affecting Cisco ASA and FTD. No further technical preconditions, attack path details, or CVSS score are provided in the supplied source material, so defenders should rely on Cisco’s advisory and mitigation guidance for product-specific validation and remediation.

Defensive priority

High

Recommended defensive actions

  • Review Cisco’s security advisory referenced by CISA for product-specific mitigation and upgrade guidance.
  • Apply vendor-recommended mitigations or updates as soon as possible.
  • If mitigations are unavailable, discontinue use of the affected product per CISA guidance.
  • Confirm which ASA/FTD devices are in scope, including externally reachable deployments.
  • Validate remediation by checking device versions and configuration against Cisco guidance.
  • Monitor affected appliances for signs of unauthorized privilege changes or suspicious administrative activity.

Evidence notes

This debrief is based on the CISA KEV entry for CVE-2024-20359, which lists the vulnerability as a Cisco ASA and FTD privilege escalation issue with dateAdded 2024-04-24 and dueDate 2024-05-01. The source metadata also points to Cisco’s security advisory and the NVD record as official references. No CVSS score or additional exploit detail was supplied in the corpus.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-20359 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-20359

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2024-20359 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-20359

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.