CVE-2018-25233: WebDrive 18.00.5057 contains a denial of service vulnerability that allows local attackers to crash the applic

Routine

MEDIUM 6.2DOWNGRADE

CVE-2018-25233 is a medium-severity flaw (CVSS 6.2) affecting webdrive. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

WebDrive 18.00.5057 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an excessively long string in the username field during Secure WebDAV connection setup. Attackers can input a buffer-overflow payload of 5000 bytes in the username parameter and trigger a connection test to cause the application to crash.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.2 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 89%)
CISA exploited list	No
Weakness	CWE-233
Published	2026-03-30
Last modified	2026-10-07

Publisher (CNA): VulnCheck · Vendor: southrivertech

Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-30 12:16 UTCPublished CVE record published
2026-10-07 08:10 UTCUpdated Record last modified

southrivertech webdrive DOWNGRADE

Affected: 18.00.5057

Fixed in: no fixed release known

Safe to downgrade to: a release before 18.00.5057

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 18.00.5057 (Debian / Ubuntu)

apt-cache madison webdrive sudo apt install webdrive=<VERSION_BEFORE_18.00.5057> sudo apt-mark hold webdrive

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

dnf --showduplicates list webdrive sudo dnf downgrade webdrive-<VERSION_BEFORE_18.00.5057> sudo dnf versionlock add webdrive

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-2018-25233?

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

Is CVE-2018-25233 being exploited?

CVE-2018-25233 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-2018-25233 affect?

CVE-2018-25233 affects webdrive. Severity is medium (CVSS 6.2). WebDrive 18.00.5057 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an excessively long string in the username field during Secure WebDAV connection setup. Attackers can input a b

How urgent is CVE-2018-25233?

Priority 29/100. Public exploit reference

References

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