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CVE-2015-3864

86
FAUCET Score

CVE-2015-3864 is an integer underflow vulnerability in the libstagefright component of Android's mediaserver, specifically affecting versions before 5.1.1 LMY48M. This flaw, an incomplete fix for a previous vulnerability, allows remote attackers to execute arbitrary code by crafting malicious MPEG-4 data. With a CVSS score of 10.0, it represents a critical risk, enabling unauthenticated attackers to achieve full compromise (confidentiality, integrity, and availability) with low attack complexity. The vulnerability has publicly available exploit code, including Metasploit modules and ExploitDB entries, and has garnered significant community discussion and media coverage, indicating widespread awareness and potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.1CPE matchmatch criteria
cpe:2.3:o:google:android:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

AV:N/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
87.13%
Probability of exploitation in next 30 days
EPSS Percentile
99.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: Android Stagefright MP4 tx3g Integer Overflow · Aug 13, 2015
ExploitDB: EDB-40436 · Sep 27, 2016
This CVE's current EPSS score of 0.8712 is in the 100th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

android.googlesource.com / platform/frameworks/av/+/6fe85f7e15203e48df2cc3e8e1c4bc6ad49dc968
Vendor Advisory
blog.zimperium.com / cve-2015-3864-metasploit-module-now-available-for-testing
Release NotesThird Party Advisory
blog.zimperium.com / reflecting-on-stagefright-patches
groups.google.com / forum/message/raw
Vendor Advisory
exploit-db.com / exploits/38226
exploit-db.com / exploits/39640
exploit-db.com / exploits/40436
securityfocus.com / bid/76682