CVE-2017-15582: In net.MCrypt in the "Diary with lock" (aka WriteDiary) application 4.72 for Android, hardcoded SecretKey and

This month

HIGH 7.5REMOTEDOWNGRADE

CVE-2017-15582 is a high-severity flaw (CVSS 7.5) affecting diary with lock. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In net.MCrypt in the "Diary with lock" (aka WriteDiary) application 4.72 for Android, hardcoded SecretKey and iv variables are used for the AES parameters, which makes it easier for attackers to obtain the cleartext of stored diary entries.

Why this priority

High severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-798
Published	2017-10-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: writediary

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

Am I affected?

Timeline

2017-10-27 20:29 UTCPublished CVE record published
2026-06-17 01:07 UTCUpdated Record last modified

writediary diary with lock DOWNGRADE

Affected: 4.72

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.72

1. Check installed version

apt-cache policy diary-with-lock || rpm -q diary-with-lock || diary-with-lock --version

2. No fixed release: DOWNGRADE to a release before 4.72 (Debian / Ubuntu)

apt-cache madison diary-with-lock sudo apt install diary-with-lock=<VERSION_BEFORE_4.72> sudo apt-mark hold diary-with-lock

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

dnf --showduplicates list diary-with-lock sudo dnf downgrade diary-with-lock-<VERSION_BEFORE_4.72> sudo dnf versionlock add diary-with-lock

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-2017-15582?

diary with lock: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-15582 being exploited?

CVE-2017-15582 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-2017-15582 affect?

CVE-2017-15582 affects diary with lock. Severity is high (CVSS 7.5). In net.MCrypt in the "Diary with lock" (aka WriteDiary) application 4.72 for Android, hardcoded SecretKey and iv variables are used for the AES parameters, which makes it easier for attackers to obtain the cleartext of stored diary entries.

How urgent is CVE-2017-15582?

Priority 48/100. High severity; Remotely exploitable, no login, no user action

Software pages

Android vulnerabilities

Related CVEs

CVE-2017-15581 HIGH 7.5 DOWNGRADE In the "Diary with lock" (aka WriteDiary) application 4.72 for Android, neither HTTPS nor other encryption is

References

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