CVE-2020-23349Public exploit

Private activity launch via unchecked intent parameters

Published Apr 5, 2022 · Updated Aug 4, 2024

Intent redirection in Sina Weibo Android SDK 4.2.7 allows attackers to start an application's unexported Android activities. WbShareTransActivity is exported and accepts arbitrary intent parameters, using attacker-controlled activity names to start components in the embedding app. A crafted intent must reach an app that embeds the SDK and exports this activity; successful exploitation bypasses manifest access controls for private activities.

CVSS severity7.5
High
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Intent redirection in Sina Weibo Android SDK 4.2.7 allows attackers to start an application's unexported Android activities. WbShareTransActivity is exported and accepts arbitrary intent parameters, using attacker-controlled activity names to start components in the embedding app. A crafted intent must reach an app that embeds the SDK and exports this activity; successful exploitation bypasses manifest access controls for private activities.

The record

CVE
CVE-2020-23349
Published
Apr 5, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 5, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.0NVDAV:N/AC:L/Au:N/C:N/I:P/A:N
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

No sourced classifications are available.

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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