CVE-2023-2645: A vulnerability, which was classified as critical, was found in USR USR-G806 1.0.41

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CRITICAL 9.8REMOTEMITIGATE

CVE-2023-2645 is a critical-severity flaw (CVSS 9.8) affecting usr-g806 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability, which was classified as critical, was found in USR USR-G806 1.0.41. Affected is an unknown function of the component Web Management Page. The manipulation of the argument username/password with the input root leads to use of hard-coded password. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. It is recommended to change the configuration settings. VDB-228774 is the ident

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.2% (top 12%)
CISA exploited list	No
Weakness	CWE-259
Published	2023-05-11
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: usr

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

Am I affected?

Timeline

2023-05-11 07:15 UTCPublished CVE record published
2026-06-17 05:53 UTCUpdated Record last modified

usr usr-g806 firmware MITIGATE

Affected: 1.0.41

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.41

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-2023-2645?

usr-g806 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-2645 being exploited?

CVE-2023-2645 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-2023-2645 affect?

CVE-2023-2645 affects usr-g806 firmware. Severity is critical (CVSS 9.8). A vulnerability, which was classified as critical, was found in USR USR-G806 1.0.41. Affected is an unknown function of the component Web Management Page. The manipulation of the argument username/password with the input root leads to use o

How urgent is CVE-2023-2645?

Priority 66/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

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References

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