CVE-2023-46139Public exploit

Root privilege takeover via APK signature mismatch

Published Oct 30, 2023 · Updated Sep 5, 2024

Signature validation in tiann KernelSU 0.6.1 through 0.6.9 allows local users to gain root privileges via a crafted APK. The kernel/apk_sign.c verifier trusts the last APK signing block with ID 0x7109871a while Android validates the first, and it does not reject V1 fallback conditions. Exploitation requires an affected Android device, a specially constructed malicious APK, and user interaction to install it; successful exploitation grants the app root privileges.

CVSS severity7.3
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Signature validation in tiann KernelSU 0.6.1 through 0.6.9 allows local users to gain root privileges via a crafted APK. The kernel/apk_sign.c verifier trusts the last APK signing block with ID 0x7109871a while Android validates the first, and it does not reject V1 fallback conditions. Exploitation requires an affected Android device, a specially constructed malicious APK, and user interaction to install it; successful exploitation grants the app root privileges.

The record

CVE
CVE-2023-46139
Published
Oct 30, 2023
Updated
Sep 5, 2024
Vendor
tiann
Product
KernelSU
Classifications
T1548
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.6.1, < 0.7.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

tiann · KernelSUversion=>= 0.6.1, < 0.7.0

Published CVSS scores

5.0GitHub, Inc. CNACVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L
7.3GitHub Advisory DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1548Abuse Elevation Control Mechanism

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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