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TI-2026-83971 Aliases CVE-2026-49934GHSA-x4cj-r3mm-m29r

Improper input validation in Android MmiUtils.java allows USSD code execution

Priority LOW 35CWE-20Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

Google Android contains improper input validation in multiple functions of MmiUtils.java. A local attacker with no additional execution privileges can trigger USSD/MMI code execution, which leads to local escalation of privilege. User interaction is needed for exploitation. The weakness is classified as CWE-20.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

In multiple functions of MmiUtils.java, there is a possible risk of USSD/MMI code execution due to improper input validation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00076 0th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GoogleAndroid17; 16-qpr2; 16; 15; 14—No fix listedCNA
  • Android VendorGoogle Affected 17; 16-qpr2; 16; 15; 14 Fixed in — No fix listed CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:o:google:android:14.0:*:*:*:*:*:*:*14.0VulnerableGoogle
cpe:2.3:o:google:android:15.0:*:*:*:*:*:*:*15.0VulnerableGoogle
cpe:2.3:o:google:android:16.0:-:*:*:*:*:*:*16.0VulnerableGoogle
cpe:2.3:o:google:android:16.0:qpr2:*:*:*:*:*:*16.0 qpr2VulnerableGoogle
cpe:2.3:o:google:android:17.0:-:*:*:*:*:*:*17.0VulnerableGoogle
  • cpe:2.3:o:google:android:14.0:*:*:*:*:*:*:* Versions 14.0 Vulnerable ·Google
  • cpe:2.3:o:google:android:15.0:*:*:*:*:*:*:* Versions 15.0 Vulnerable ·Google
  • cpe:2.3:o:google:android:16.0:-:*:*:*:*:*:* Versions 16.0 Vulnerable ·Google
  • cpe:2.3:o:google:android:16.0:qpr2:*:*:*:*:*:* Versions 16.0 qpr2 Vulnerable ·Google
  • cpe:2.3:o:google:android:17.0:-:*:*:*:*:*:* Versions 17.0 Vulnerable ·Google

Remediation

The sources list no fixed version for Android.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Timeline

  1. 2026-11-02 Threatist record created from CVE-2026-49934
  2. 2026-11-02 Alias added: GHSA-x4cj-r3mm-m29r
  3. 2026-11-03 CVSS score added · CISA ADP
  4. 2026-11-03 Weakness changed · CISA ADP
  5. 2026-11-03 CISA SSVC decision points changed
  6. 2026-11-04 CISA SSVC decision points changed

References

Advisory 1

  • TI-2026-42236 Improper authorization in Google Android KEVCVSS 3.1HIGH 8.8
  • TI-2025-30821 Use after free in Google Android KEVCVSS 3.1HIGH 8.8
  • TI-2023-17777 Improper privilege management in Google Android KEVCVSS 3.1HIGH 8.8
  • TI-2025-30872 Integer overflow in Google Android KEVCVSS 3.1HIGH 8.4
  • TI-2024-21766 there is a possible way to bypass due to a logic error in the code. KEVCVSS 3.1HIGH 8.1
  • TI-2025-30849 Missing authentication in Google Android KEVCVSS 3.1HIGH 7.8
See all 8410 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences