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CVE-2015-6647

21
FAUCET Score

CVE-2015-6647 is a privilege escalation vulnerability affecting Android 5.x and 6.0 devices, specifically within the Widevine QSEE TrustZone application. An attacker could exploit this flaw via a crafted application to gain elevated privileges. With a CVSS v3 score of 7.8 (High), this vulnerability requires user interaction (UI:R) but has low attack complexity (AC:L), potentially leading to complete compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation is reported, it garnered some community discussion and media coverage at the time of its disclosure.

Impacted Technologies

VendorProductVersion(s)CPE
5.0CPE matchmatch criteria
cpe:2.3:o:google:android:5.0:*:*:*:*:*:*:*
5.0.1CPE matchmatch criteria
cpe:2.3:o:google:android:5.0.1:*:*:*:*:*:*:*
5.0.2CPE matchmatch criteria
cpe:2.3:o:google:android:5.0.2:*:*:*:*:*:*:*
5.1.0CPE matchmatch criteria
cpe:2.3:o:google:android:5.1.0:*:*:*:*:*:*:*
5.1.1CPE matchmatch criteria
cpe:2.3:o:google:android:5.1.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.69%
Probability of exploitation in next 30 days
EPSS Percentile
49.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0069 is in the 46th percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

googlevendor investigatingvia nvd_reference
View patch

References

packetstormsecurity.com / files/172637/Widevine-Trustlet-5.x-6.x-7.x-PRDiagVerifyProvisioning-Buffer-Overflow.html
seclists.org / fulldisclosure/2023/May/26
source.android.com / security/bulletin/2016-01-01.html
Vendor Advisory
securitytracker.com / id/1034592