How severe is CVE-2018-12049?

CVE-2018-12049 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-12049 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-12049?

CVE-2018-12049 affects Canon Lbp6030w Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-12049?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-12049 published?

CVE-2018-12049 was published on 2018-06-08 and last updated on 2026-06-17.

CVE-2018-12049

CVE-2018-12049 is a critical-severity vulnerability in Canon Lbp6030w Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Canon Lbp6030w Firmware
Published: 2018-06-08
Last modified: 2026-06-17

Description

A remote attacker can bypass the System Manager Mode on the Canon LBP6030w web interface without a PIN for /checkLogin.cgi via vectors involving /portal_top.html to get full access to the device. NOTE: the vendor reportedly responded that this issue occurs when a customer keeps the default settings without using the countermeasures and best practices shown in the documentation

Frequently asked questions

What is CVE-2018-12049?: A remote attacker can bypass the System Manager Mode on the Canon LBP6030w web interface without a PIN for /checkLogin.cgi via vectors involving /portal_top.html to get full access to the device. NOTE: the vendor reportedly responded that this issue occurs when a customer keeps the default settings without using the countermeasures and best practices shown in the documentation
How severe is CVE-2018-12049?: CVE-2018-12049 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-12049 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-12049?: CVE-2018-12049 affects Canon Lbp6030w Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-12049?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-12049 published?: CVE-2018-12049 was published on 2018-06-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:canon:lbp6030w_firmware:-:*:*:*:*:*:*:*

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