How severe is CVE-2023-45207?

CVE-2023-45207 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-45207 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-45207?

CVE-2023-45207 primarily affects Zimbra Collaboration. In total, 77 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-45207?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-45207 have an EU (EUVD) identifier?

Yes. CVE-2023-45207 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-49514.

When was CVE-2023-45207 published?

CVE-2023-45207 was published on 2024-02-13 and last updated on 2026-06-17.

CVE-2023-45207

CVE-2023-45207 is a medium-severity vulnerability in Zimbra Collaboration with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-49514
Weakness: CWE-79
Affected product: Zimbra Collaboration
Published: 2024-02-13
Last modified: 2026-06-17

Description

An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15, 9.0, and 10.0. An attacker can send a PDF document through mail that contains malicious JavaScript. While previewing this file in webmail in the Chrome browser, the stored XSS payload is executed. (This has been mitigated by sanitising the JavaScript code present in a PDF document.)

Frequently asked questions

What is CVE-2023-45207?: An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15, 9.0, and 10.0. An attacker can send a PDF document through mail that contains malicious JavaScript. While previewing this file in webmail in the Chrome browser, the stored XSS payload is executed. (This has been mitigated by sanitising the JavaScript code present in a PDF document.)
How severe is CVE-2023-45207?: CVE-2023-45207 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-45207 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-45207?: CVE-2023-45207 primarily affects Zimbra Collaboration. In total, 77 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-45207?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-45207 have an EU (EUVD) identifier?: Yes. CVE-2023-45207 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-49514.
When was CVE-2023-45207 published?: CVE-2023-45207 was published on 2024-02-13 and last updated on 2026-06-17.

References

Affected products (77)

cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:-:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p1:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p10:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p11:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p12:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p13:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p14:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p15:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p16:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p17:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p18:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p19:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p2:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p20:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p21:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p22:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p23:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p24:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p25:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p26:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p27:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p28:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p29:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p3:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p30:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p31:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p32:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p33:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p34:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p35:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p37:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p4:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p40:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p41:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p42:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p43:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p5:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p6:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p7:*:*:*:*:*:*

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