CVE-2017-17551: The Backup and Restore feature in Mobotap Dolphin Browser for Android 12.0.2 suffers from an arbitrary file wr

This month

HIGH 8.8DOWNGRADE

CVE-2017-17551 is a high-severity flaw (CVSS 8.8) affecting dolphin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Backup and Restore feature in Mobotap Dolphin Browser for Android 12.0.2 suffers from an arbitrary file write vulnerability when attempting to restore browser settings from a malicious Dolphin Browser backup file. This arbitrary file write vulnerability allows an attacker to overwrite a specific executable in the Dolphin Browser's data directory with a crafted malicious executable. Every time the Dolphin Browser is launched, it will attempt t

Why this priority

High severity

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.0% (top 39%)
CISA exploited list	No
Weakness	CWE-20
Published	2017-12-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: changyou

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

Am I affected?

Timeline

2017-12-11 18:29 UTCPublished CVE record published
2026-06-17 01:11 UTCUpdated Record last modified

changyou dolphin DOWNGRADE

Affected: 12.0.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 12.0.2

1. Check installed version

apt-cache policy dolphin || rpm -q dolphin || dolphin --version

2. No fixed release: DOWNGRADE to a release before 12.0.2 (Debian / Ubuntu)

apt-cache madison dolphin sudo apt install dolphin=<VERSION_BEFORE_12.0.2> sudo apt-mark hold dolphin

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

dnf --showduplicates list dolphin sudo dnf downgrade dolphin-<VERSION_BEFORE_12.0.2> sudo dnf versionlock add dolphin

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-2017-17551?

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

Is CVE-2017-17551 being exploited?

CVE-2017-17551 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-2017-17551 affect?

CVE-2017-17551 affects dolphin. Severity is high (CVSS 8.8). The Backup and Restore feature in Mobotap Dolphin Browser for Android 12.0.2 suffers from an arbitrary file write vulnerability when attempting to restore browser settings from a malicious Dolphin Browser backup file. This arbitrary file wr

How urgent is CVE-2017-17551?

Priority 46/100. High severity

Software pages

Android vulnerabilities

Related CVEs

CVE-2021-27969 MEDIUM 4.8 DOWNGRADE Dolphin CMS 7.4.2 is vulnerable to stored XSS via the Page Builder "width" parameter.
CVE-2017-17553 MEDIUM 5.3 DOWNGRADE The Dolphin Browser for Android 12.0.2 suffers from an insecure parsing implementation of the Intent URI schem
CVE-2013-3638 HIGH 8.8 UPGRADE SQL injection vulnerability in Boonex Dolphin before 7.1.3 allows remote authenticated users to execute arbitr

References

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