CVE-2025-53521

Known Exploited Vulnerability Entry External Catalog

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Entry Details

CVE-2025-53521

Confirmed

Yes

2026-03-27 00:00 UTC

Timestamps

2026-03-27

2026-03-27

Scope

KEV entry: F5 BIG-IP Unspecified Vulnerability | Affected: F5 / BIG-IP | Description: F5 BIG-IP AMP contains an unspecified vulnerability that could allow a threat actor to achieve remote code execution. | Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. | Due date: 2026-03-30 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): Please adhere to F5’s guidelines to assess exposure and mitigate risks. Check for signs of potential compromise on all internet accessible F5 products affected by this vulnerability. For more information please see: https://my.f5.com/manage/s/article/K000156741 ; https://my.f5.com/manage/s/article/K000160486 ; https://my.f5.com/manage/s/article/K11438344 ; https://nvd.nist.gov/vuln/detail/CVE-2025-53521

References
  • {'id': 'CVE-2025-53521', 'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-53521'}

2c8249b3-5391-4d17-ac4a-ef7b2ef3f258

405284c2-e461-4670-8979-7fd2c9755a60

2026-03-27 20:00 UTC

2026-03-27 20:00 UTC

Evidence (1)
Type Source Signal Confidence Details GCVE Metadata
vendor_report cisa-kev successful_exploitation 0.80
View details 
{
  "cwes": [],
  "date_added": "2026-03-27",
  "due_date": "2026-03-30",
  "feed": "CISA Known Exploited Vulnerabilities Catalog",
  "knownRansomwareCampaignUse": "Unknown",
  "product": "BIG-IP",
  "vendorProject": "F5",
  "vulnerabilityName": "F5 BIG-IP Unspecified Vulnerability"
}
 -
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