CVE-2019-12325: The Htek UC902 VoIP phone web management interface contains several buffer overflow vulnerabilities in the fir

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HIGH 8.8MITIGATE

CVE-2019-12325 is a high-severity flaw (CVSS 8.8) affecting uc902 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Htek UC902 VoIP phone web management interface contains several buffer overflow vulnerabilities in the firmware version 2.0.4.4.46, which allow an attacker to crash the device (DoS) without authentication or execute code (authenticated as a user) to spawn a remote shell as a root user.

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	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-787
Published	2019-07-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: htek

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

Am I affected?

Timeline

2019-07-22 16:15 UTCPublished CVE record published
2026-06-17 02:14 UTCUpdated Record last modified

htek uc902 firmware MITIGATE

Affected: 2.0.4.4.46

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.4.4.46

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2019-12325?

uc902 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-12325 being exploited?

CVE-2019-12325 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-2019-12325 affect?

CVE-2019-12325 affects uc902 firmware. Severity is high (CVSS 8.8). The Htek UC902 VoIP phone web management interface contains several buffer overflow vulnerabilities in the firmware version 2.0.4.4.46, which allow an attacker to crash the device (DoS) without authentication or execute code (authenticated

How urgent is CVE-2019-12325?

Priority 56/100. High severity; Public exploit reference

References

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