Security readout for executives and security teams
Plain-English summary
This Android issue could let a local actor obtain information from affected devices because of a logic error in adbd.te policy behavior. The public record names Android 10, 11, and 12. No user interaction or extra execution privileges are required, but the source does not show remote exploitation or active exploitation.
Executive priority
Treat this as a patch-management priority for Android fleets, not an emergency based on current evidence. Business urgency increases where older Android devices handle sensitive data or cannot be centrally patched.
Technical view
CVE-2021-39700 is a local information disclosure flaw in Android adbd.te policies. The logic error caused CTS Listening Ports Test results to be invalid. Affected versions listed are Android 10, Android 11, and Android 12. CVSS, CWE, and detailed exploit mechanics are not provided in the source bundle.
Likely exposure
Exposure is most likely on Android 10, 11, or 12 devices that lack the vendor update addressing Android ID A-201645790. OEM and carrier patch status may vary, so fleet-level patch verification is required.
Exploitation context
The sources state local information disclosure with no user interaction and no additional execution privileges needed. CISA KEV status is false in the bundle, and no cited source establishes active exploitation.
Researcher notes
Public detail is limited. The record identifies adbd.te policy logic and CTS Listening Ports Test invalid results, but does not provide CVSS, CWE, affected build ranges beyond Android 10-12, or exploit details. Avoid assuming remote reachability.
Mitigation direction
- Apply Android security updates covering the May 2022 bulletin or later vendor guidance.
- Verify OEM or carrier patch availability for affected Android 10-12 devices.
- Retire or isolate unsupported devices that cannot receive the relevant update.
- Limit local access to managed devices where patching is delayed.
Validation and detection
- Inventory managed Android devices by OS version and security patch level.
- Confirm whether devices include the fix for Android ID A-201645790.
- Check vendor or OEM advisories for model-specific patch status.
- Document unsupported Android 10-12 devices as residual risk.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CVE-2021-39700 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://source.android.com/security/bulletin/2022-05-01CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.