kbrain

CVE-2013-4787

HIGH · CVSS 9.3EPSS 13.5%EU EUVD

Android 1.6 Donut through 4.2 Jelly Bean does not properly check cryptographic signatures for applications, which allows attackers to execute arbitrary code via an application package file (APK) that is modified in a way that does not violate the cryptographic signature, probably involving multiple entries in a Zip file with the same name in which one entry is validated but the other entry is installed, aka Android security bug 8219321 and the "Master Key" vulnerability.

Key facts

CVSS score
9.3 (v2.0)
Severity
HIGH
CVSS vector
AV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness (CWE)
CWE-310
EPSS score
13.5% (96th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2013-4633)
Published
July 9, 2013
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2013-4633 in the EU Vulnerability Database. Last updated in EUVD on September 17, 2024.

View on the EU Vulnerability Database

Affected products

  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android
  • google / android

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain