CVE-2015-3864

HIGHCVSS v2 · 10.010.0—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 10.0 — v2 rates that HIGH (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:C/I:C/A:C. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 87.1% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
Weaponized
10.0EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 87%
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 87%CVSS v2: 10.0Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Integer underflow in the MPEG4Extractor::parseChunk function in MPEG4Extractor.cpp in libstagefright in mediaserver in Android before 5.1.1 LMY48M allows remote attackers to execute arbitrary code via crafted MPEG-4 data, aka internal bug 23034759. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-3824.

CVSS v2.0 (legacy)
10.0HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
10.0(low)
EG Risk
84(Track)
EG Risk 84/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity100% × 45%
Exploitation87% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
87%
EPSS %ILE
100%
KEV
Not listed

Published

October 1, 2015

Last Modified

May 6, 2026

References (16)

Data Freshness Timeline

(refreshed 3× in last 7d / 4396× 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.

Showing the most recent 100 of 4,442 total refreshes for this CVE.

  1. 2026-08-20 22:50 UTCEPSS rescore
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Publicly available exploits

(6 references)

Working exploit code is in the public domain (1 Metasploit module) (2 GitHub PoCs) (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-40436✓ verified
    First seen Sep 27, 2016

    Google Android 5.0 < 5.1.1 - 'Stagefright' .MP4 tx3g Integer Overflow (Metasploit)

    Open source ↗
  • Exploit-DBEDB-39640
    First seen Mar 30, 2016

    Google Android 5.0.1 - Metaphor Stagefright (ASLR Bypass)

    Open source ↗
  • GitHub PoCeudemonics/scaredycat
    First seen Dec 8, 2015

    Python script to generate a malicious MP4 file and start a CherryPy web server hosting a simple HTML page with the embedded file. Exploits another Stagefright vulnerability, the integer overflow (CVE-2015-3864).

    Open source ↗
  • Exploit-DBEDB-38226✓ verified
    First seen Sep 17, 2015

    Google Android - libstagefright Integer Overflow Remote Code Execution

    Open source ↗
  • GitHub PoCpwnaccelerator/stagefright-cve-2015-3864
    First seen Aug 18, 2015

    PoC - Binary patches for CVE-2015-3864 (NOT for production, use at your own risk)

    Open source ↗
  • Metasploitexploit/android/browser/stagefright_mp4_tx3g_64bit✓ verified
    First seen Aug 13, 2015

    Android Stagefright MP4 tx3g Integer Overflow

    Open source ↗

Frequently asked(4)

What is CVE-2015-3864?
CVE-2015-3864 is a high vulnerability published on October 1, 2015. Integer underflow in the MPEG4Extractor::parseChunk function in MPEG4Extractor.cpp in libstagefright in mediaserver in Android before 5.1.1 LMY48M allows remote attackers to execute arbitrary code via crafted MPEG-4 data, aka internal bug 23034759. NOTE: this vulnerability exists because of an…
When was CVE-2015-3864 disclosed?
CVE-2015-3864 was first published in the National Vulnerability Database on October 1, 2015, 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-2015-3864 actively exploited?
CVE-2015-3864 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 87% probability of exploitation in the next 30 days, which ranks it in the top 0.3% of all scored CVEs.
How do I remediate CVE-2015-3864?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-3864, 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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