CVE-2014-4904: The Crossmo Calendar (aka com.crossmo.calendar) application 1.7.1 for Android does not verify X.509 certificat

Routine

MEDIUM 5.4DOWNGRADE

CVE-2014-4904 is a medium-severity flaw (CVSS 5.4) affecting crossmo calendar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Crossmo Calendar (aka com.crossmo.calendar) application 1.7.1 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	2014-10-21
Last modified	2026-06-17

Publisher (CNA): CERT/CC · Vendor: crossmo

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

Am I affected?

Timeline

2014-10-21 10:55 UTCPublished CVE record published
2026-06-17 00:10 UTCUpdated Record last modified

crossmo crossmo calendar DOWNGRADE

Affected: 1.7.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.7.1

1. Check installed version

apt-cache policy crossmo-calendar || rpm -q crossmo-calendar || crossmo-calendar --version

2. No fixed release: DOWNGRADE to a release before 1.7.1 (Debian / Ubuntu)

apt-cache madison crossmo-calendar sudo apt install crossmo-calendar=<VERSION_BEFORE_1.7.1> sudo apt-mark hold crossmo-calendar

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

dnf --showduplicates list crossmo-calendar sudo dnf downgrade crossmo-calendar-<VERSION_BEFORE_1.7.1> sudo dnf versionlock add crossmo-calendar

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-2014-4904?

crossmo calendar: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2014-4904 being exploited?

CVE-2014-4904 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-2014-4904 affect?

CVE-2014-4904 affects crossmo calendar. Severity is medium (CVSS 5.4). The Crossmo Calendar (aka com.crossmo.calendar) application 1.7.1 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 cert

How urgent is CVE-2014-4904?

Priority 24/100. No elevated risk signals yet.

Software pages

Android vulnerabilities

References

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