Security readout for executives and security teams
Plain-English summary
This CVE describes an Android app risk in Sina Weibo Android SDK 4.2.7. A sharing transition activity could be used to launch activities that were meant to be private inside an app. Business urgency depends on whether your Android apps embed this SDK version and whether private activities perform sensitive actions.
Executive priority
Treat this as an inventory-driven mobile application risk. Prioritize apps that embed Weibo sharing, handle sensitive user data, or expose account, payment, administrative, or deep-link functionality through private activities.
Technical view
The issue is an intent redirection flaw in com.sina.weibo.sdk.share.WbShareTransActivity in Sina Weibo Android SDK 4.2.7. The CVE description says any unexported Activities could be started through that component. No CVSS score, CWE, affected CPEs, patch version, or detailed prerequisites are provided in the source bundle.
Likely exposure
Exposure is limited to Android applications that include Sina Weibo Android SDK 4.2.7. The CVE record does not enumerate downstream affected apps or package identifiers beyond the SDK component named in the description.
Exploitation context
The source bundle does not show KEV listing or active exploitation. It describes a class of local Android intent redirection but does not provide evidence of in-the-wild attacks, public exploit maturity, or confirmed business impact.
Researcher notes
Evidence is sparse: the CVE record names the SDK version and vulnerable component but lacks CVSS, CWE, CPEs, patch status, and exploit details. Validate against actual app manifests and vendor guidance before assigning operational severity.
Mitigation direction
- Inventory Android apps and builds for Sina Weibo Android SDK 4.2.7.
- Check the vendor GitHub issue and SDK guidance for fixed versions.
- Upgrade the SDK if a vendor-supported fixed release is available.
- Review private activities reachable from the share flow for sensitive behavior.
- Restrict or validate intent forwarding paths where application code controls them.
Validation and detection
- Inspect Android dependency manifests for Sina Weibo SDK version 4.2.7.
- Review merged AndroidManifest.xml for WbShareTransActivity exposure.
- Confirm whether unexported activities can be reached through the SDK flow.
- Check whether reachable private activities handle sensitive data or privileged actions.
- Document findings with affected app names, versions, and release channels.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2020-23349 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/sinaweibosdk/weibo_android_sdk/issues/406CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.