CVE-2026-20989

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{}

{"affected": [{"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "SMR Mar-2026 Release in Android 16"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Samsung Mobile Devices", "source": "cna", "vendor": "Samsung Mobile"}, "product": "samsung_mobile_devices", "vendor": "samsung_mobile"}], "analysis": {"en": {"generated_at": "2026-03-20T15:28:45.403846+00:00", "value": {"mitigation_remediation": ["Install the latest Samsung firmware update released on or after March\u202f2026 Release\u00a01, which includes the patch for font signature verification.", "Until the update is available, avoid installing or enabling custom fonts from untrusted sources on the device."], "summary": {"action": "Patch ASAP", "impact": "Local code execution"}, "threat_synthesis": {"affected_systems": "The vulnerability affects Samsung Mobile Devices running Android\u00a016.0, including all the Software Maintenance Releases (SMRs) listed in the CPE entries (SMR Aug\u20112025\u00a0r1 through SMR Mar\u20112026\u00a0r1). Devices on any of these firmware levels are susceptible until a patch is applied.", "description_and_impact": "An improper verification of the cryptographic signature for fonts in the Android\u00a016.0 font settings was discovered. The flaw exists in versions released before the SMR Mar\u20112026 Release\u00a01 update. A physical attacker who can install a custom font on the device can bypass signature checks, potentially allowing local code execution or other unauthorized actions. CWE\u2011347 is cited for this improper signature validation weakness.", "risk_and_exploitability": "The CVSS score is 5.1 (Medium), and the EPSS probability is reported as less than 1\u202f%, indicating a low likelihood of exploitation. The issue is not yet listed in the CISA KEV catalog, further suggesting it is not actively exploited in the wild today. The primary attack vector is physical access, which limits exposure to individuals who can physically interact with the device. Nevertheless, the potential for local privilege escalation warrants prompt remediation."}}}}, "created": "2026-03-17T09:55:18.372071+00:00", "title": "Improper Font Signature Verification Enables Local Code Execution on Samsung Android 16.0", "updated": "2026-03-23T14:00:33.547890+00:00", "vendors": ["samsung_mobile", "samsung_mobile$PRODUCT$samsung_mobile_devices"]}