How severe is CVE-2024-33668?

CVE-2024-33668 has a CVSS 3.x base score of 9.1, 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 none.

Is CVE-2024-33668 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-33668?

CVE-2024-33668 primarily affects Zammad. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-33668?

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.

Does CVE-2024-33668 have an EU (EUVD) identifier?

Yes. CVE-2024-33668 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31381.

When was CVE-2024-33668 published?

CVE-2024-33668 was published on 2024-04-26 and last updated on 2026-06-17.

CVE-2024-33668

CVE-2024-33668 is a critical-severity vulnerability in Zammad with a CVSS 3.x base score of 9.1. 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-639.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-31381
Weakness: CWE-639
Affected product: Zammad
Published: 2024-04-26
Last modified: 2026-06-17

Description

An issue was discovered in Zammad before 6.3.0. The Zammad Upload Cache uses insecure, partially guessable FormIDs to identify content. An attacker could try to brute force them to upload malicious content to article drafts they have no access to.

Frequently asked questions

What is CVE-2024-33668?: An issue was discovered in Zammad before 6.3.0. The Zammad Upload Cache uses insecure, partially guessable FormIDs to identify content. An attacker could try to brute force them to upload malicious content to article drafts they have no access to.
How severe is CVE-2024-33668?: CVE-2024-33668 has a CVSS 3.x base score of 9.1, 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 none.
Is CVE-2024-33668 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-33668?: CVE-2024-33668 primarily affects Zammad. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-33668?: 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.
Does CVE-2024-33668 have an EU (EUVD) identifier?: Yes. CVE-2024-33668 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31381.
When was CVE-2024-33668 published?: CVE-2024-33668 was published on 2024-04-26 and last updated on 2026-06-17.

References

https://zammad.com/en/advisories/zaa-2024-02

Affected products (2)

cpe:2.3:a:zammad:zammad:*:*:*:*:*:*:*:*
cpe:2.3:a:zammad:zammad:6.3.0:alpha:*:*:*:*:*:*

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