Fastconnect 6900 FirmwareOperating system · Qualcomm

CVE-2025-27039

MEDIUM · 6.6 CVSS v3.1 Published 2025-10-09
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
68/100
Remediation priority · Elevated
Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Memory corruption may occur while processing IOCTL call for DMM/WARPNCC CONFIG request.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Fastconnect 6900 FirmwareOperating system
Affected:all versions
Fastconnect 7800 FirmwareOperating system
Affected:all versions
Sxr2230p FirmwareOperating system
Affected:all versions
Sxr2250p FirmwareOperating system
Affected:all versions
Wcd9380 FirmwareOperating system
Affected:all versions
Wcd9385 FirmwareOperating system
Affected:all versions
Wsa8830 FirmwareOperating system
Affected:all versions
Wsa8832 FirmwareOperating system
Affected:all versions

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Patch available Apply the vendor patch
Vendor patch docs.qualcomm.com →
Recommended fix Moderate confidence

Firmware version as specified in October 2025 Qualcomm security bulletin (specific version numbers to be determined from vendor bulletin)

  1. 1. Navigate to the vendor security bulletin at https://docs.qualcomm.com/product/publicresources/securitybulletin/october-2025-bulletin.html
  2. 2. Locate CVE-2025-27039 in the October 2025 security bulletin
  3. 3. Identify the specific fixed firmware versions listed for your affected product(s)
  4. 4. Check the current firmware version of your affected device(s)
  5. 5. If current version is older than the fixed version, obtain the updated firmware from the device manufacturer or Qualcomm reference firmware source
  6. 6. Follow the device-specific firmware update procedure to apply the patched firmware
Caveat Firmware updates may require device downtime and could have compatibility considerations; verify with device manufacturer before upgrading

Generated from the published advisory — verify against the referenced sources before acting.

We can apply and verify the patch for your build — typical engagement from $1,600. Get the patch applied

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-27039 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data