CVE-2015-6639

HIGHNVD 7.87.8—Elevated

7.8

The Widevine QSEE TrustZone application in Android 5.x before 5.1.1 LMY49F and 6.0 before 2016-01-01 allows attackers to gain privileges via a crafted application that leverages QSEECOM access, aka internal bug 24446875.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 89.9%
KEV: Not listed

Published

January 6, 2016

Last Modified

May 6, 2026

References (10)

security@androidhttp://packetstormsecurity.com/files/172637/Widevine-Trustlet-5.x-6.x-7.x-PRDiagVerifyProvisioning-Buffer-Overflow.html
security@androidhttp://seclists.org/fulldisclosure/2023/May/26
security@androidhttp://source.android.com/security/bulletin/2016-01-01.html
security@androidhttp://www.securitytracker.com/id/1034592
security@androidhttps://www.exploit-db.com/exploits/39757/
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/172637/Widevine-Trustlet-5.x-6.x-7.x-PRDiagVerifyProvisioning-Buffer-Overflow.html
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2023/May/26
af854a3a-2127-422b-91ae-364da2661108http://source.android.com/security/bulletin/2016-01-01.html
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1034592
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/39757/

Data Freshness Timeline

(refreshed 7× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:14 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-05 22:44 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:10 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-29 13:41 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore
2026-05-26 13:41 UTCEPSS rescore
2026-05-24 16:43 UTCEPSS rescore

Publicly available exploits

(3 references)

Working exploit code is in the public domain (2 GitHub PoCs) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoClaginimaineb/ExtractKeyMaster
First seen Jun 30, 2016
Exploit that extracts Qualcomm's KeyMaster keys using CVE-2015-6639 and CVE-2016-2431
Open source ↗
Exploit-DBEDB-39757
First seen May 2, 2016
QSEE - PRDiag* Commands Privilege Escalation
Open source ↗
GitHub PoClaginimaineb/cve-2015-6639
First seen May 2, 2016
QSEE Privilege Escalation Exploit using PRDiag* commands (CVE-2015-6639)
Open source ↗

Frequently asked(5)

What is CVE-2015-6639?

CVE-2015-6639 is a high vulnerability published on January 6, 2016. The Widevine QSEE TrustZone application in Android 5.x before 5.1.1 LMY49F and 6.0 before 2016-01-01 allows attackers to gain privileges via a crafted application that leverages QSEECOM access, aka internal bug 24446875.

When was CVE-2015-6639 disclosed?

CVE-2015-6639 was first published in the National Vulnerability Database on January 6, 2016, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2015-6639 actively exploited?

CVE-2015-6639 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 89.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2015-6639?

CVE-2015-6639 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2015-6639?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-6639, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2015-6639

📅 Published

🔄 Last Modified

🔗 References (10)