CVE-2013-6774: Untrusted search path vulnerability in the ChainsDD Superuser package 3.1.3 for Android 4.2.x and earlier, Cya

This month

HIGH 10.0DOWNGRADEDOWNGRADEDOWNGRADE

CVE-2013-6774 is a high-severity flaw (CVSS 10.0) affecting supersu, chainsdd superuser, superuser. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Untrusted search path vulnerability in the ChainsDD Superuser package 3.1.3 for Android 4.2.x and earlier, CyanogenMod/ClockWorkMod/Koush Superuser package 1.0.2.1 for Android 4.2.x and earlier, and Chainfire SuperSU package before 1.69 for Android 4.2.x and earlier allows attackers to load an arbitrary .jar file and gain privileges via a crafted BOOTCLASSPATH environment variable for a /system/xbin/su process. NOTE: another researcher was unabl

Why this priority

Critical severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Published	2014-03-31
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: androidsu · chainfire · koushik dutta

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2014-03-31 14:58 UTCPublished CVE record published
2026-06-17 00:00 UTCUpdated Record last modified

chainfire supersu DOWNGRADE

Affected: 1.69

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.69

1. Check installed version

apt-cache policy supersu || rpm -q supersu || supersu --version

2. No fixed release: DOWNGRADE to a release before 1.69 (Debian / Ubuntu)

apt-cache madison supersu sudo apt install supersu=<VERSION_BEFORE_1.69> sudo apt-mark hold supersu

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list supersu sudo dnf downgrade supersu-<VERSION_BEFORE_1.69> sudo dnf versionlock add supersu

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

androidsu chainsdd superuser DOWNGRADE

Affected: 3.1.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.1.3

1. Check installed version

apt-cache policy chainsdd-superuser || rpm -q chainsdd-superuser || chainsdd-superuser --version

2. No fixed release: DOWNGRADE to a release before 3.1.3 (Debian / Ubuntu)

apt-cache madison chainsdd-superuser sudo apt install chainsdd-superuser=<VERSION_BEFORE_3.1.3> sudo apt-mark hold chainsdd-superuser

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list chainsdd-superuser sudo dnf downgrade chainsdd-superuser-<VERSION_BEFORE_3.1.3> sudo dnf versionlock add chainsdd-superuser

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

koushik dutta superuser DOWNGRADE

Affected: 1.0.2.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.2.1

1. Check installed version

apt-cache policy superuser || rpm -q superuser || superuser --version

2. No fixed release: DOWNGRADE to a release before 1.0.2.1 (Debian / Ubuntu)

apt-cache madison superuser sudo apt install superuser=<VERSION_BEFORE_1.0.2.1> sudo apt-mark hold superuser

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list superuser sudo dnf downgrade superuser-<VERSION_BEFORE_1.0.2.1> sudo dnf versionlock add superuser

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2013-6774?

supersu: downgrade or apply the listed mitigation; chainsdd superuser: downgrade or apply the listed mitigation; superuser: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2013-6774 being exploited?

CVE-2013-6774 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2013-6774 affect?

CVE-2013-6774 affects supersu, chainsdd superuser, superuser. Severity is high (CVSS 10.0). Untrusted search path vulnerability in the ChainsDD Superuser package 3.1.3 for Android 4.2.x and earlier, CyanogenMod/ClockWorkMod/Koush Superuser package 1.0.2.1 for Android 4.2.x and earlier, and Chainfire SuperSU package before 1.69 for

How urgent is CVE-2013-6774?

Priority 59/100. Critical severity; Public exploit reference

Software pages

Android vulnerabilities

Related CVEs

CVE-2013-6775 HIGH 10.0 DOWNGRADE The Chainfire SuperSU package before 1.69 for Android allows attackers to gain privileges via the (1) backtick

References

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