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PatchSiren cyber security CVE debrief

CVE-2025-66486 IBM CVE debrief

IBM Aspera Shares versions 1.9.9 through 1.11.0 are vulnerable to HTML injection. A remote attacker could inject malicious HTML code, which when viewed, would be executed in the victim's Web browser within the security context of the hosting site. This vulnerability requires defenders to assess exposure and potential impact on systems using these versions. Verification of system exposure and application of patches or updates when available are crucial steps in mitigating this vulnerability.

Vendor
IBM
Product
Aspera Shares
CVSS
MEDIUM 4.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-01
Original CVE updated
2026-09-30
Advisory published
2026-04-01
Advisory updated
2026-09-30

Who should care

Defenders responsible for systems using IBM Aspera Shares versions 1.9.9 through 1.11.0 should assess exposure and potential impact due to the HTML injection vulnerability. This includes verifying system exposure, applying patches or updates when available, and monitoring systems for suspicious activity related to HTML injection.

Why it matters

Defenders should prioritize verifying exposure and assessing potential impact due to the HTML injection vulnerability in IBM Aspera Shares versions 1.9.9 through 1.11.0.

  • Potential execution of malicious HTML code in victim's Web browser
  • Possible compromise of user sessions or sensitive information
  • Required verification of system exposure and vulnerability status
  • Necessity to apply patches or updates when available

Technical summary

IBM Aspera Shares 1.9.9 through 1.11.0 is vulnerable to HTML injection. A remote attacker could inject malicious HTML code, which when viewed, would be executed in the victim's Web browser within the security context of the hosting site. This technical summary highlights the vulnerability's impact on systems using these versions and emphasizes the need for defenders to prioritize verifying exposure and assessing potential impact.

Defensive priority

Defenders should prioritize verifying exposure and assessing potential impact, focusing on systems using IBM Aspera Shares versions 1.9.9 through 1.11.0.

Recommended defensive actions

  • Verify system exposure by checking if IBM Aspera Shares versions 1.9.9 through 1.11.0 are in use.
  • Assess potential impact on systems using vulnerable versions.
  • Apply vendor-provided patches or updates when available.
  • Monitor systems for suspicious activity related to HTML injection.

Evidence notes

The CVE record and NVD entry provide details on the HTML injection vulnerability in IBM Aspera Shares. Vendor advisory information is also available. The vulnerability affects IBM Aspera Shares versions 1.9.9 through 1.11.0. Defenders should verify exposure and assess potential impact. The CVE Program and NVD offer source-provided CVE metadata and official vulnerability assessment, respectively.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-66486 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-66486

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

  • CVE-2025-66486 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-66486

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

Supplemental references

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.