CVE-2014-7539: The Zhang Zhijun Taiwan Visit 2014-06-25 (aka com.zizizzi) application 1.0 for Android does not verify X.509 c

Routine

MEDIUM 5.4DOWNGRADE

CVE-2014-7539 is a medium-severity flaw (CVSS 5.4) affecting zhang zhijun taiwan visit 2014-06-25. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Zhang Zhijun Taiwan Visit 2014-06-25 (aka com.zizizzi) application 1.0 for Android 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

No elevated risk signals yet

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

Risk facts

CVSS score	5.4 (Medium)
EPSS exploit chance	0.3% (top 81%)
CISA exploited list	No
Weakness	CWE-310
Published	2014-10-20
Last modified	2026-06-17

Publisher (CNA): CERT/CC · Vendor: zhang zhijun taiwan visit 2014-06-25 project

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

Am I affected?

Timeline

2014-10-20 10:55 UTCPublished CVE record published
2026-06-17 00:15 UTCUpdated Record last modified

zhang zhijun taiwan visit 2014-06-25 project zhang zhijun taiwan visit 2014-06-25 DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy zhang-zhijun-taiwan-visit-2014-06-25 || rpm -q zhang-zhijun-taiwan-visit-2014-06-25 || zhang-zhijun-taiwan-visit-2014-06-25 --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison zhang-zhijun-taiwan-visit-2014-06-25 sudo apt install zhang-zhijun-taiwan-visit-2014-06-25=<VERSION_BEFORE_1.0> sudo apt-mark hold zhang-zhijun-taiwan-visit-2014-06-25

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

dnf --showduplicates list zhang-zhijun-taiwan-visit-2014-06-25 sudo dnf downgrade zhang-zhijun-taiwan-visit-2014-06-25-<VERSION_BEFORE_1.0> sudo dnf versionlock add zhang-zhijun-taiwan-visit-2014-06-25

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-2014-7539?

zhang zhijun taiwan visit 2014-06-25: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2014-7539 being exploited?

CVE-2014-7539 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-2014-7539 affect?

CVE-2014-7539 affects zhang zhijun taiwan visit 2014-06-25. Severity is medium (CVSS 5.4). The Zhang Zhijun Taiwan Visit 2014-06-25 (aka com.zizizzi) application 1.0 for Android 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 cra

How urgent is CVE-2014-7539?

Priority 24/100. No elevated risk signals yet.

Software pages

Android vulnerabilities

References

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