PatchSiren

PatchSiren cyber security CVE debrief

CVE-2025-20281 Cisco CVE debrief

CVE-2025-20281 is a Cisco Identity Services Engine injection vulnerability that CISA added to the Known Exploited Vulnerabilities catalog on 2025-07-28. Because it is a KEV-listed issue, affected Cisco ISE deployments should be treated as urgent remediation targets. The supplied corpus does not include a CVSS score or detailed impact analysis, so defensive action should be driven by Cisco guidance and exposure review.

Vendor
Cisco
Product
Identity Services Engine
CVSS
CRITICAL 10
CISA KEV
Listed
Original CVE published
2025-07-28
Original CVE updated
2025-07-28
Advisory published
2025-07-28
Advisory updated
2025-07-28

Who should care

Cisco Identity Services Engine administrators, security operations teams, and vulnerability management teams responsible for enterprise identity and access infrastructure.

Technical summary

According to the supplied CISA KEV record, CVE-2025-20281 affects Cisco Identity Services Engine and is categorized as an injection vulnerability. CISA's entry indicates known exploitation and sets a remediation due date of 2025-08-18. No CVSS score or deeper technical breakdown was included in the supplied corpus.

Defensive priority

Urgent. KEV inclusion means affected Cisco ISE systems should be prioritized immediately and remediated by the CISA due date where possible.

Recommended defensive actions

  • Inventory all Cisco Identity Services Engine deployments and confirm whether they are affected.
  • Review Cisco's referenced security advisory and apply vendor-recommended mitigations or updates as soon as they are available.
  • If mitigations are unavailable, follow CISA guidance to discontinue use of the product until a safe remediation path exists.
  • Apply CISA BOD 22-01 guidance where applicable for cloud services.
  • Restrict access and increase monitoring for suspicious activity on Cisco ISE until remediation is complete.

Evidence notes

This debrief is based on the supplied CISA KEV record dated 2025-07-28, which identifies Cisco Identity Services Engine, lists a due date of 2025-08-18, and states the required action to apply vendor mitigations or discontinue use if mitigations are unavailable. The same record references Cisco's security advisory and NVD/CVE records. The supplied corpus does not provide a CVSS score, detailed technical impact description, or a ransomware campaign association beyond 'Unknown'.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-20281 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-20281

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

  • CVE-2025-20281 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-20281

    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.