CVE-2017-3213: The Think Mutual Bank Mobile Banking app 3.1.5 for iOS does not verify X.509 certificates from SSL servers, wh

This month

MEDIUM 5.9REMOTEDOWNGRADE

CVE-2017-3213 is a medium-severity flaw (CVSS 5.9) affecting think mutual bank mobile banking app. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Think Mutual Bank Mobile Banking app 3.1.5 for iOS does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

Why this priority

Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-295
Published	2017-05-05
Last modified	2026-06-17

Publisher (CNA): CERT/CC · Vendor: think mutual bank

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-05-05 07:29 UTCPublished CVE record published
2026-06-17 01:17 UTCUpdated Record last modified

think mutual bank think mutual bank mobile banking app DOWNGRADE

Affected: 3.1.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.1.5

1. Check installed version

apt-cache policy think-mutual-bank-mobile-banking-app || rpm -q think-mutual-bank-mobile-banking-app || think-mutual-bank-mobile-banking-app --version

2. No fixed release: DOWNGRADE to a release before 3.1.5 (Debian / Ubuntu)

apt-cache madison think-mutual-bank-mobile-banking-app sudo apt install think-mutual-bank-mobile-banking-app=<VERSION_BEFORE_3.1.5> sudo apt-mark hold think-mutual-bank-mobile-banking-app

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list think-mutual-bank-mobile-banking-app sudo dnf downgrade think-mutual-bank-mobile-banking-app-<VERSION_BEFORE_3.1.5> sudo dnf versionlock add think-mutual-bank-mobile-banking-app

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-3213?

think mutual bank mobile banking app: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-3213 being exploited?

CVE-2017-3213 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-3213 affect?

CVE-2017-3213 affects think mutual bank mobile banking app. Severity is medium (CVSS 5.9). The Think Mutual Bank Mobile Banking app 3.1.5 for iOS does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

How urgent is CVE-2017-3213?

Priority 40/100. Remotely exploitable, no login, no user action

Software pages

iOS vulnerabilities

References

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