Accessibility: Files or Directories Accessible to External Parties
CVE-2022-27837 is a high-severity files or directories accessible to external parties vulnerability in Accessibility from Samsung, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. The record lists version 12.5.3.2 in Android R(11.0) and 13.0.1.1 in Android S(12.0) as the first without the flaw, so updating Accessibility to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.56% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Accessibility to 12.5.3.2 in Android R(11.0) and 13.0.1.1 in Android S(12.0) or a later version.
- Read the advisory on security.samsungmobile.com for workarounds and exact fixed builds.
- Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Samsung Mobile | Accessibility | before 12.5.3.2 in Android R(11.0) and 13.0.1.1 in Android S(12.0) | 12.5.3.2 in Android R(11.0) and 13.0.1.1 in Android S(12.0) |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- RequiredA user must take an action such as opening a file or link.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 4.4 | Medium | CNA (samsung.com) |
| CVSS 3.1 | 7.8 | High | NVD |
| CVSS 2.0 | 9.3 | High | NVD |
Official description
A vulnerability using PendingIntent in Accessibility prior to version 12.5.3.2 in Android R(11.0) and 13.0.1.1 in Android S(12.0) allows attacker to access the file with system privilege.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Files or Directories Accessible to External Parties
The product makes files or directories accessible to unauthorized actors, even though they should not be.
How developers prevent this class of flaw
- When storing data in the cloud (e.g., S3 buckets, Azure blobs, Google Cloud Storage, etc.), use the provider's controls to disable public access.
More Files or Directories Accessible to External Parties vulnerabilities (CWE-552)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
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