CVE-2021-26277

Privilege escalation via incorrect PendingIntent handling

Published Feb 17, 2023 · Updated Mar 18, 2025

Privilege escalation in vivo Frame service before Android 11 allows local users to perform privileged actions through PendingIntent hijacking. The vendor identifies incorrect PendingIntent handling but does not disclose the affected function or the missing construction or validation control. Exploitation requires a locally installed malicious application with low privileges and user interaction; the specific privileged actions available are undisclosed.

CVSS severity5.6
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in vivo Frame service before Android 11 allows local users to perform privileged actions through PendingIntent hijacking. The vendor identifies incorrect PendingIntent handling but does not disclose the affected function or the missing construction or validation control. Exploitation requires a locally installed malicious application with low privileges and user interaction; the specific privileged actions available are undisclosed.

The record

CVE
CVE-2021-26277
Published
Feb 17, 2023
Updated
Mar 18, 2025
Vendor
vivo
Product
Frame service
Classifications
CWE-94, T1548
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 17, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 18, 2025Record 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=2021.6.30 <all

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

vivo · Frame serviceversion=2021.6.30 <all

Published CVSS scores

5.6vivoCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1548Abuse Elevation Control Mechanism

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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