How severe is CVE-2022-48021?

CVE-2022-48021 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-2022-48021 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-48021?

CVE-2022-48021 affects Zammad. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-48021?

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-2022-48021 published?

CVE-2022-48021 was published on 2023-02-03 and last updated on 2026-06-17.

CVE-2022-48021

CVE-2022-48021 is a critical-severity vulnerability in Zammad 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.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Zammad
Published: 2023-02-03
Last modified: 2026-06-17

Description

A vulnerability in Zammad v5.3.0 allows attackers to execute arbitrary code or escalate privileges via a crafted message sent to the server.

Frequently asked questions

What is CVE-2022-48021?: A vulnerability in Zammad v5.3.0 allows attackers to execute arbitrary code or escalate privileges via a crafted message sent to the server.
How severe is CVE-2022-48021?: CVE-2022-48021 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-2022-48021 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-48021?: CVE-2022-48021 affects Zammad. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-48021?: 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-2022-48021 published?: CVE-2022-48021 was published on 2023-02-03 and last updated on 2026-06-17.

References

https://zammad.com/de/advisories/zaa-2022-11

Affected products (1)

cpe:2.3:a:zammad:zammad:5.3.0:*:*:*:*:*:*:*

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