CVE-2025-36923
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 · uneditedIn NrmmDecoder::DecodeSORTransparentContext of cn_NrmmDecoder.cpp, there is a possible out of bounds write due to a heap buffer overflow. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
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 confidenceA heap buffer overflow in NrmmDecoder::DecodeSORTransparentContext (cn_NrmmDecoder.cpp) allows an out-of-bounds write during SOR transparent context decoding. This memory corruption can be exploited by a proximal/adjacent attacker to achieve escalation of privilege without user interaction.
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 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
- Adjacent
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:A/AC:L/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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Confirm Android OS is in useCheck the device operating system by reviewing system properties or /system/build.prop for 'ro.build.id' or similar Android identifiersAffected if The device runs any version of Google Android, as all versions are affected
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Identify NrmmDecoder component presenceSearch the system for the library cn_NrmmDecoder.cpp or libnrmmdecoder.so in /system/lib or /vendor/lib directories, or examine any media codec configurations that reference NrmmDecoderAffected if The NrmmDecoder library with SOR transparent context decoding capability is present on the device
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Verify SOR decoding is accessibleCheck if the device supports or has enabled SOR (Service Oriented Routing) transparent context decoding through media codec lists, decoder configurations, or relevant service manifestsAffected if SOR transparent context decoding is enabled or available as a decoding mode on the device
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Check proximity attack surfaceReview enabled network interfaces: verify Bluetooth is enabled (settings or 'service bluetooth' status), check for Wi-Fi Direct availability, or examine any proximity-based communication services runningAffected if Bluetooth, Wi-Fi Direct, or other proximity network interfaces are enabled, as this is the proximal/adjacent attack vector for exploitation
If the device runs any version of Google Android and has the NrmmDecoder component with SOR decoding present while having Bluetooth or other proximity interfaces enabled, the environment is affected by this vulnerability.
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 dataApply vendor patches when available; until then, minimize exposure by restricting network adjacency (e.g., Bluetooth, local network) to untrusted devices and monitor for indicators of exploitation.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-36923 — 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-2025-36923 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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