CVE-2026-25260
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 · uneditedMemory Corruption when accessing shared buffers without validation of concurrent user-mode input modifications.
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 · moderate confidenceMemory corruption vulnerability where shared buffers are accessed without validation of concurrent user-mode input modifications, indicating a race condition where attacker-controlled input can alter buffer state between validation and use.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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 dataall versionsall versionsall versionsall versionsall versionsall versionsall versionsall versionsCVSS 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
- High
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Qualcomm firmware componentQuery the system or device for the installed Qualcomm firmware component name. On affected devices, this is typically found via system information utilities, firmware dumps, or device-specific diagnostic interfaces.Affected if The firmware component name matches any of these: Cologne, Fastconnect 6700, Fastconnect 6900, Fastconnect 7800, Qcm5430, Qcm6490, Video Collaboration Vc3 Platform, or Sc8380xp
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Confirm firmware versionRetrieve the firmware version string from the identified Qualcomm component. Use device-specific commands such as 'cat /proc/...', vendor diagnostic tools, or firmware metadata extraction.Affected if Any version is present because all versions of the listed firmware products are affected
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Identify shared memory usageExamine the firmware or driver configuration to determine if shared memory buffers are being accessed. This may require access to firmware debug information, memory maps, or driver configuration files.Affected if Shared memory buffers are accessed by the firmware without atomic validation patterns at the point of use
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Check for concurrent access patternsReview code or configuration for operations that validate input in one context and use it in another, particularly across user/kernel or inter-process boundaries where race conditions can occur.Affected if The firmware performs check-then-use operations on shared buffers where the validation result is not rechecked immediately before consumption
The environment is affected if the system runs any version of the listed Qualcomm firmware components (Cologne, Fastconnect 6700/6900/7800, Qcm5430, Qcm6490, Vc3 Platform, or Sc8380xp) and utilizes the vulnerable shared memory buffer access paths.
Generated from the published advisory. Verify against your own configuration.
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.
From vendor dataImplement proper synchronization mechanisms (locks, atomic operations) to validate buffer state immediately before access, or use immutable buffer copies to prevent concurrent modification during processing.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,224.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-25260 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-25260 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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