Security readout for executives and security teams
Plain-English summary
CVE-2026-20971 is a Samsung Mobile device vulnerability in the PROCA driver. A local attacker with low privileges could potentially execute arbitrary code. The issue is rated high severity, but exploitation requires local access, high complexity, and specific attack conditions. Samsung identifies the issue as fixed in the January 2026 SMR Release 1.
Executive priority
Treat as a high-priority mobile patching item, especially for enterprise-managed Samsung fleets. Business urgency is strongest where devices handle sensitive data or allow untrusted app installation. Current evidence does not support emergency response for active exploitation.
Technical view
The vulnerability is a use-after-free (CWE-416) in Samsung’s PROCA driver before SMR Jan-2026 Release 1. CVSS 4.0 score is 7.3 high, with local attack vector, low privileges required, no user interaction, high attack complexity, and high impact to vulnerable system confidentiality, integrity, and availability.
Likely exposure
Exposure is limited to affected Samsung Mobile Devices running Android 13, 14, 15, or 16 that have not received Samsung’s January 2026 SMR Release 1. The issue is local, so remote internet-facing exposure is not indicated by the provided sources.
Exploitation context
The sources do not report active exploitation, and the CVE is not listed as KEV in the provided data. Exploitation would require a local attacker with low privileges and specific conditions. No public exploit details are included in the source bundle.
Researcher notes
Public detail is limited to Samsung’s advisory and CVE metadata. Key constraints are AV:L, AC:H, AT:P, PR:L, and UI:N. Do not assume remote exploitability. Focus validation on Samsung patch level and whether the PROCA driver fix is included for specific models.
Mitigation direction
- Apply Samsung Mobile January 2026 SMR Release 1 where available.
- Prioritize managed Samsung devices that lag monthly security updates.
- Check Samsung’s advisory for model-specific rollout and carrier timing.
- Restrict installation of untrusted apps until devices are updated.
Validation and detection
- Confirm device patch level includes January 2026 SMR Release 1 or later.
- Inventory Samsung Android 13 through 16 devices in scope.
- Verify MDM compliance reports reflect the required Samsung security update.
- Review Samsung advisory updates for affected model details.
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-416: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-20971 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
- 7.3 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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 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:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
7.3HighVector: CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=01CVE reference
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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.