Security readout for executives and security teams
Plain-English summary
CVE-2020-0041 is an Android kernel flaw in Binder that can let a local attacker gain higher privileges. It does not require user interaction, but the attacker must already have local execution privileges. CISA lists it as known exploited, so unpatched Android devices should be treated as urgent exposure.
Executive priority
Treat this as a high-priority mobile fleet issue because CISA identifies known exploitation and successful abuse could give an attacker broad control over an affected device. Patchable devices should be updated promptly; unsupported devices need replacement or risk acceptance.
Technical view
The issue is an incorrect bounds check in binder_transaction in binder.c, causing a possible out-of-bounds write. The CVSS vector is local, low complexity, low privileges, no user interaction, with high confidentiality, integrity, and availability impact. The affected product is Android kernel.
Likely exposure
Exposure is likely on Android devices using affected Android kernel builds that have not received the relevant Android or device-vendor security update. Risk is highest where attackers can run local code, such as through a malicious app or prior compromise.
Exploitation context
Active exploitation is supported by CISA KEV listing for CVE-2020-0041. The provided sources do not describe exploit mechanics, campaigns, affected device models, or attacker groups, so those details should not be assumed.
Researcher notes
Evidence supports Android kernel exposure and local privilege escalation through Binder. The bundle identifies CWE-20 and Android ID A-145988638, but does not provide commit details, exploit indicators, affected device models, or confirmed fixed kernel versions.
Mitigation direction
- Prioritize Android devices that lack the relevant Android security bulletin or OEM kernel update.
- Check device vendor guidance for fixed builds and patch availability.
- Retire or isolate devices that cannot receive vendor security updates.
- Restrict installation of untrusted apps on unmanaged or legacy Android devices.
- Monitor mobile fleet compliance against required Android security patch levels.
Validation and detection
- Inventory Android devices and record OS, kernel, and security patch level.
- Compare device patch state against Android and OEM guidance for CVE-2020-0041.
- Identify devices unable to receive further security updates.
- Review mobile threat telemetry for signs of local privilege escalation or suspicious apps.
- Confirm compensating controls for devices awaiting remediation.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-20: Exact CWE lookup
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Open ATT&CK lookupCVE-2020-0041 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://source.android.com/security/bulletin/2020-03-01CVE reference · x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-0041CVE reference · government-resource
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.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.