CVE-2019-15766: The KSLABS KSWEB (aka ru.kslabs.ksweb) application 3.93 for Android allows authenticated remote code execution

This month

HIGH 8.8DOWNGRADE

CVE-2019-15766 is a high-severity flaw (CVSS 8.8) affecting ksweb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The KSLABS KSWEB (aka ru.kslabs.ksweb) application 3.93 for Android allows authenticated remote code execution via a POST request to the AJAX handler with the configFile parameter set to the arbitrary file to be written to (and the config_text parameter set to the content of the file to be created). This can be a PHP file that is written to in the public web directory and subsequently executed. The attacker must have network connectivity to the P

Why this priority

High severity
Public exploit reference

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	Low
User interaction	None
EPSS exploit chance	3.1% (top 12%)
CISA exploited list	No
Weakness	CWE-434
Published	2019-10-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: kslabs

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

Am I affected?

Timeline

2019-10-03 21:15 UTCPublished CVE record published
2026-06-17 02:21 UTCUpdated Record last modified

kslabs ksweb DOWNGRADE

Affected: 3.93

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.93

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.93 (Debian / Ubuntu)

apt-cache madison ksweb sudo apt install ksweb=<VERSION_BEFORE_3.93> sudo apt-mark hold ksweb

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

dnf --showduplicates list ksweb sudo dnf downgrade ksweb-<VERSION_BEFORE_3.93> sudo dnf versionlock add ksweb

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-2019-15766?

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

Is CVE-2019-15766 being exploited?

CVE-2019-15766 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-2019-15766 affect?

CVE-2019-15766 affects ksweb. Severity is high (CVSS 8.8). The KSLABS KSWEB (aka ru.kslabs.ksweb) application 3.93 for Android allows authenticated remote code execution via a POST request to the AJAX handler with the configFile parameter set to the arbitrary file to be written to (and the config_t

How urgent is CVE-2019-15766?

Priority 58/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities · Android vulnerabilities

Related CVEs

CVE-2019-16198 MEDIUM 6.5 DOWNGRADE KSLabs KSWEB 3.93 allows ../ directory traversal, as demonstrated by the hostFile parameter.

References

← Back to latest CVEs