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CVE-2026-21023VulnerabilityPublished Updated

PackageManagerService · Insufficient Verification of Data Authenticity

Source GCVE Database

0
Authoritative record:CVE-2026-21023· Medium 6.9

Not known to be exploited · CVSS 6.9 Medium.

Data as of 27 Oct 2026, 00:44 UTC

CVSS 4.0 base score
6.9Medium
How severe the flaw is on the 0–10 CVSS scale.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Samsung MobileSamsung Mobile DevicesAffected–Fixed in–

AI-suggested

A fix is available in SMR Mar-2026 Release 1. Users and administrators should apply this official update to remediate the vulnerability. No additional mitigation steps are indicated.

Description

A vulnerability in PackageManagerService prior to SMR Mar-2026 Release 1 allows local attackers to modify installation restrictions of specific applications due to insufficient verification of data authenticity. This flaw does not impact confidentiality or availability but can lead to unauthorized modification of installation policies.

References

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