How severe is CVE-2024-33535?

CVE-2024-33535 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-2024-33535 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-33535?

CVE-2024-33535 primarily affects Zimbra Collaboration. In total, 39 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-33535?

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.

Does CVE-2024-33535 have an EU (EUVD) identifier?

Yes. CVE-2024-33535 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31272.

When was CVE-2024-33535 published?

CVE-2024-33535 was published on 2024-08-12 and last updated on 2026-06-17.

CVE-2024-33535

CVE-2024-33535 is a high-severity vulnerability in Zimbra Collaboration 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. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-31272
Weakness: CWE-22
Affected product: Zimbra Collaboration
Published: 2024-08-12
Last modified: 2026-06-17

Description

An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0. The vulnerability involves unauthenticated local file inclusion (LFI) in a web application, specifically impacting the handling of the packages parameter. Attackers can exploit this flaw to include arbitrary local files without authentication, potentially leading to unauthorized access to sensitive information. The vulnerability is limited to files within a specific directory.

Frequently asked questions

What is CVE-2024-33535?: An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0. The vulnerability involves unauthenticated local file inclusion (LFI) in a web application, specifically impacting the handling of the packages parameter. Attackers can exploit this flaw to include arbitrary local files without authentication, potentially leading to unauthorized access to sensitive information. The vulnerability is limited to files within a specific directory.
How severe is CVE-2024-33535?: CVE-2024-33535 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-2024-33535 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-33535?: CVE-2024-33535 primarily affects Zimbra Collaboration. In total, 39 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-33535?: 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.
Does CVE-2024-33535 have an EU (EUVD) identifier?: Yes. CVE-2024-33535 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31272.
When was CVE-2024-33535 published?: CVE-2024-33535 was published on 2024-08-12 and last updated on 2026-06-17.

References

Affected products (39)

cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:-:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p0:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p1:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p10:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p11:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p12:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p13:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p14:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p15:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p16:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p19:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p2:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p20:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p21:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p23:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p24:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p24.1:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p25:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p26:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p27:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p3:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p30:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p31:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p32:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p33:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p34:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p35:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p36:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p37:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p38:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p39:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p4:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p5:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p6:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p7:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p7.1:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p8:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:9.0.0:p9:*:*:*:*:*:*

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