CVE-2017-20041: A vulnerability was found in Ucweb UC Browser 11.2.5.932

Routine

MEDIUM 5.4DOWNGRADE

CVE-2017-20041 is a medium-severity flaw (CVSS 5.4) affecting uc browser. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in Ucweb UC Browser 11.2.5.932. It has been classified as critical. Affected is an unknown function of the component HTML Handler. The manipulation of the argument title leads to improper restriction of rendered ui layers (URL). It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-1021
Published	2022-06-13
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: ucweb

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

Am I affected?

Timeline

2022-06-13 07:15 UTCPublished CVE record published
2026-06-17 01:14 UTCUpdated Record last modified

ucweb uc browser DOWNGRADE

Affected: 11.2.5.932

Fixed in: no fixed release known

Safe to downgrade to: a release before 11.2.5.932

1. Check installed version

apt-cache policy uc-browser || rpm -q uc-browser || uc-browser --version

2. No fixed release: DOWNGRADE to a release before 11.2.5.932 (Debian / Ubuntu)

apt-cache madison uc-browser sudo apt install uc-browser=<VERSION_BEFORE_11.2.5.932> sudo apt-mark hold uc-browser

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

dnf --showduplicates list uc-browser sudo dnf downgrade uc-browser-<VERSION_BEFORE_11.2.5.932> sudo dnf versionlock add uc-browser

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-2017-20041?

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

Is CVE-2017-20041 being exploited?

CVE-2017-20041 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-2017-20041 affect?

CVE-2017-20041 affects uc browser. Severity is medium (CVSS 5.4). A vulnerability was found in Ucweb UC Browser 11.2.5.932. It has been classified as critical. Affected is an unknown function of the component HTML Handler. The manipulation of the argument title leads to improper restriction of rendered ui

How urgent is CVE-2017-20041?

Priority 37/100. Public exploit reference

Related CVEs

CVE-2020-7364 MEDIUM 4.3 UPGRADE User Interface (UI) Misrepresentation of Critical Information vulnerability in the address bar of UCWeb's UC B
CVE-2020-7363 MEDIUM 4.3 UPGRADE User Interface (UI) Misrepresentation of Critical Information vulnerability in the address bar of UCWeb's UC B

References

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