Security readout for executives and security teams
Plain-English summary
This CVE covers an older iOS mobile banking app that failed to verify SSL/TLS server certificates. A network-positioned attacker could impersonate the bank service and capture sensitive information, including login credentials. The public record names version 3.0.1; current product status or fixed versions are not provided.
Executive priority
Prioritize if the organization supports users of this legacy banking app or manages affected devices. Credential exposure is a serious impact, but the record is old and lacks current exploitation or patch evidence.
Technical view
CVE-2017-9566 describes missing X.509 certificate validation in fsb-dequeen-mobile-banking/id1091025340 for iOS 3.0.1. Because the client accepts crafted certificates, TLS authentication can be bypassed in a man-in-the-middle position. Sources do not provide CVSS, CWE mapping, patch details, or affected-version range beyond 3.0.1.
Likely exposure
Exposure is limited to users or organizations still using the named iOS app version 3.0.1. The provided sources do not identify server-side exposure, Android exposure, or broader affected versions.
Exploitation context
The CVE states that man-in-the-middle attackers can spoof SSL servers using a crafted certificate. KEV is false, and the supplied sources do not report active exploitation in the wild.
Researcher notes
Evidence is sparse: the CVE description names one iOS app version and the certificate-validation failure. No CVSS, CWE, patch, or exploit-in-the-wild source is provided. Treat broader claims beyond the named app/version as unconfirmed.
Mitigation direction
- Identify whether the named iOS app and version remain in use.
- Check vendor or App Store guidance for replacement, retirement, or fixed versions.
- Remove or block unsupported vulnerable app versions from managed devices.
- Advise users not to use the app on untrusted networks until remediated.
Validation and detection
- Inventory managed iOS devices for app id1091025340 and version 3.0.1.
- Confirm whether current app builds enforce valid X.509 certificate chains.
- Review mobile app security assessments for certificate validation findings.
- Check vendor communications for documented remediation or app retirement.
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
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CVE-2017-9566 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://medium.com/%40chronic_9612/advisory-44-credit-union-apps-for-ios-may-allow-login-credential-exposure-4d2f380b85c5CVE 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.