CVE-2020-16849

CVE-2020-16849 is a high-severity vulnerability in Canon Mf237w Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

An issue was discovered on Canon MF237w 06.07 devices. An "Improper Handling of Length Parameter Inconsistency" issue in the IPv4/ICMPv4 component, when handling a packet sent by an unauthenticated network attacker, may expose Sensitive Information.

Frequently asked questions

What is CVE-2020-16849?
An issue was discovered on Canon MF237w 06.07 devices. An "Improper Handling of Length Parameter Inconsistency" issue in the IPv4/ICMPv4 component, when handling a packet sent by an unauthenticated network attacker, may expose Sensitive Information.
How severe is CVE-2020-16849?
CVE-2020-16849 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-16849 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-16849?
CVE-2020-16849 primarily affects Canon Mf237w Firmware. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-16849?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-16849 published?
CVE-2020-16849 was published on 2020-11-30 and last updated on 2026-06-17.

References

Affected products (28)