Is CVE-2022-4055 in the CISA KEV catalog?

No. CVE-2022-4055 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-4055?

CVE-2022-4055 has a CVSS v3 base score of 7.4 (HIGH).

What is the EPSS score for CVE-2022-4055?

CVE-2022-4055 has an EPSS score of 0.65% (47th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-4055?

Upgrade xdg-utils on rhel 9 to 0:1.1.3-13.el9_6 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2022-4055

HIGH

7.4

CVSS v3

NVD

Description

When xdg-mail is configured to use thunderbird for mailto URLs, improper parsing of the URL can lead to additional headers being passed to thunderbird that should not be included per RFC 2368. An attacker can use this method to create a mailto URL that looks safe to users, but will actually attach files when clicked.

CWE-146

How to fix

Remediation Available

xdg-utilsRed Hat / RHEL

Fixed in:0:1.1.3-13.el9_6RHSA-2025:7672

xdg-utilsRocky

Fixed in:0:1.1.3-13.el9_6RHSA-2025:7672

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N

Exploit Intelligence

0.65%probability of exploitation in 30 days

47thpercentile

Moderate risk: more likely to be exploited than 47% of all known CVEs.

References

Exploit1

gitlab.freedesktop.org

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-29.