In resolveToHeavyWeightSwitcherIfNeeded of ActivityStarter.java, there is a possible background activity launch due to a confused deputy.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- Fixed in 14, 15, 16, 16-qpr2, 17
- Who is exposed
- Specific setups only
Do first: Upgrade to a fixed version: 14, 15, 16, 16-qpr2, 17.
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- Published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 14/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Specific setups only
- Fix
- Fixed in 14, 15, 16, 16-qpr2, 17
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
This vulnerability affects the Android operating system's activity management component, which controls how apps are launched. It could allow an app to start an activity in the background without proper authorization, potentially enabling a local attacker to gain elevated privileges on the device.
Read the original description
In resolveToHeavyWeightSwitcherIfNeeded of ActivityStarter.java, there is a possible background activity launch due to a confused deputy. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
What to do
Upgrade to a fixed version: 14, 15, 16, 16-qpr2, 17.
Timeline
- CVE published
- First seen by cve.now
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Google Android
17, 16-qpr2, 16, 15, 14
Evidence 1
- Link
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-58957
What does this mean?
A flaw in Android's ActivityStarter component, in the resolveToHeavyWeightSwitcherIfNeeded path, can let an app start activities in the background through a confused deputy problem. The advisory classifies the result as escalation of privilege.Source: source.android.com
Am I affected, and how do I check?
The advisory lists Android 14, 15, 16, 16-qpr2 and 17 as the affected versions. Check your version under Settings > About phone; the listed versions match the Android release line, and the advisory does not name specific device setups.Source: source.android.com
What should I do about it?
Install the Android security update for your device that includes the fix for A-500368515 (CVE-2026-58957). The facts do not give a specific patched build number.Source: source.android.com
Is it being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data