--- title: "Zimbra Collaboration vulnerabilities and CVEs" url: https://radicalnotion.ai/vendor/zimbra/collaboration type: product description: "Zimbra Collaboration has 50 published CVEs, 3 in CISA KEV and 7 with public exploits." updated: 2026-08-13 source: RadicalNotion.AI license: CC BY-NC 4.0 (https://creativecommons.org/licenses/by-nc/4.0/) --- # Zimbra Collaboration vulnerabilities Vendor: [Zimbra](https://radicalnotion.ai/vendor/zimbra) - **Published CVEs:** 50 - **In CISA KEV:** 3 - **With a public exploit:** 7 - **With a patch:** 30 - **Average CVSS:** 6.7 - **First CVE:** 2020-12-17 - **Latest CVE:** 2026-08-13 ## Severity breakdown | Severity | CVEs | | --- | --- | | Critical | 5 | | High | 11 | | Medium | 33 | | Low | 1 | | Unscored | 0 | ## Most common weakness types | CWE | Name | CVEs | | --- | --- | --- | | [CWE-79](https://radicalnotion.ai/cwe/cwe-79) | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | 22 | | [CWE-918](https://radicalnotion.ai/cwe/cwe-918) | Server-Side Request Forgery (SSRF) | 4 | | [CWE-863](https://radicalnotion.ai/cwe/cwe-863) | Incorrect Authorization | 3 | | [CWE-94](https://radicalnotion.ai/cwe/cwe-94) | Improper Control of Generation of Code ('Code Injection') | 2 | | [CWE-352](https://radicalnotion.ai/cwe/cwe-352) | Cross-Site Request Forgery (CSRF) | 2 | | [CWE-434](https://radicalnotion.ai/cwe/cwe-434) | Unrestricted Upload of File with Dangerous Type | 2 | | [CWE-601](https://radicalnotion.ai/cwe/cwe-601) | URL Redirection to Untrusted Site ('Open Redirect') | 2 | | [CWE-24](https://radicalnotion.ai/cwe/cwe-24) | Path Traversal: '../filedir' | 1 | ## CVEs by year | Year | CVEs published | | --- | --- | | 2020 | 1 | | 2021 | 4 | | 2022 | 11 | | 2023 | 11 | | 2024 | 11 | | 2025 | 4 | | 2026 | 8 | ## Affected versions (top 26 of 61) | Version | Kind | CVEs | | --- | --- | --- | | 10.0 | exact | 1 | | 9.0 | exact | 1 | | 9.0.0 | range | 32 | | 8.8.15 | range | 29 | | \< 10.1.17 | range | 6 | | \< 8.8.15 | range | 4 | | 10.0.0 \<= v \< 10.0.8 | range | 3 | | 8.8 \<= v \< 8.8.15 | range | 3 | | 10.0.0 \<= v \< 10.0.4 | range | 2 | | 10.0.0 \<= v \< 10.0.5 | range | 2 | | 10.0.0 \<= v \< 10.0.7 | range | 2 | | 10.1.0 | range | 2 | | \< 10.1.12 | range | 1 | | \< 10.1.20 | range | 1 | | 8.8.15 | patched | 8 | | 10.1.17 | patched | 6 | | 10.0.8 | patched | 3 | | 10.0.4 | patched | 2 | | 10.0.5 | patched | 2 | | 10.0.7 | patched | 2 | | 10.1.13 | patched | 2 | | 10.0.11 | patched | 1 | | 10.0.18 | patched | 1 | | 10.0.3 | patched | 1 | | 10.0.6 | patched | 1 | | 10.0.9 | patched | 1 | ## CVEs (first 30 of 50, most severe first) | CVE | Title | Severity | CVSS | CISA KEV | Public exploit | Patch | | --- | --- | --- | --- | --- | --- | --- | | CVE-2026-73576 | In Zimbra Collaboration (ZCS) before 10.1.17, weak cryptographic key generation vulnerability... | medium | 6.5 | No | No | Yes | | CVE-2026-73575 | In Zimbra Collaboration (ZCS) before 10.1.17, a Cross-Site Request Forgery (CSRF) vulnerability... | low | 3.5 | No | No | Yes | | CVE-2026-73574 | In Zimbra Collaboration before 10.1.17, a local file inclusion (LFI) vulnerability exists in the... | medium | 6.5 | No | No | Yes | | CVE-2026-73573 | In Zimbra Collaboration (ZCS) before 10.1.17, a path traversal vulnerability exists in the Zimbra... | medium | 6.5 | No | No | Yes | | CVE-2026-73572 | In Zimbra Collaboration (ZCS) before 10.1.17, a stored cross-site scripting (XSS) vulnerability... | medium | 6.1 | No | No | Yes | | CVE-2026-73571 | An authorization bypass vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.17 due to... | medium | 4.3 | No | No | Yes | | CVE-2026-73570 | A remote code execution vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.20 when... | high | 8.9 | Yes | Yes | Yes | | CVE-2025-66376 | - | medium | 5.3 | Yes | Yes | Yes | | CVE-2025-67809 | - | medium | 4.7 | No | No | Yes | | CVE-2025-62763 | - | medium | 5.0 | No | No | Yes | | CVE-2024-45515 | - | medium | 6.1 | No | No | No | | CVE-2025-27914 | - | medium | 5.4 | No | No | Yes | | CVE-2024-45518 | - | high | 8.8 | No | No | Yes | | CVE-2024-33536 | - | medium | 5.4 | No | No | Yes | | CVE-2024-33535 | - | high | 7.5 | No | No | Yes | | CVE-2024-33533 | - | medium | 5.4 | No | No | Yes | | CVE-2024-27443 | - | medium | 6.5 | Yes | Yes | Yes | | CVE-2024-27442 | - | high | 7.8 | No | No | Yes | | CVE-2023-50808 | - | critical | 9.1 | No | No | Yes | | CVE-2023-48432 | - | medium | 6.1 | No | No | Yes | | CVE-2023-45207 | - | medium | 6.1 | No | No | Yes | | CVE-2023-45206 | - | medium | 6.1 | No | No | Yes | | CVE-2023-26562 | - | medium | 6.5 | No | No | No | | CVE-2023-43103 | - | medium | 6.1 | No | No | Yes | | CVE-2023-43102 | - | medium | 6.1 | No | No | Yes | | CVE-2023-41106 | - | high | 7.5 | No | No | Yes | | CVE-2023-34193 | - | high | 8.8 | No | No | No | | CVE-2023-29382 | - | critical | 9.8 | No | No | No | | CVE-2023-29381 | - | critical | 9.8 | No | No | No | | CVE-2023-24032 | - | high | 7.8 | No | No | No | ## Frequently asked questions ### How many CVEs does Zimbra Collaboration have? Zimbra Collaboration has 50 published CVE records since 2020. ### How many Zimbra Collaboration CVEs are in CISA KEV? 3 of Zimbra Collaboration's CVEs are listed in CISA's Known Exploited Vulnerabilities catalog, confirmed exploited in the wild and carrying a CISA remediation deadline. ### Are there public exploits for Zimbra Collaboration vulnerabilities? Yes — 7 of Zimbra Collaboration's CVEs have a known public exploit. ### Which versions of Zimbra Collaboration are affected? 61 distinct Zimbra Collaboration versions are named across its CVEs. Use the version filter above to see the CVEs affecting a specific version. ### What are the most common weakness types in Zimbra Collaboration CVEs? Zimbra Collaboration's CVEs most often map to these CWE weakness types: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')), CWE-918 (Server-Side Request Forgery (SSRF)), CWE-863 (Incorrect Authorization), CWE-94 (Improper Control of Generation of Code ('Code Injection')). ### How many critical Zimbra Collaboration vulnerabilities are there? Zimbra Collaboration has 5 critical and 11 high-severity CVEs. ### What is the average severity of Zimbra Collaboration CVEs? The average CVSS base score across Zimbra Collaboration's scored CVEs is 6.7. ## Other products from this vendor - [zm-build](https://radicalnotion.ai/vendor/zimbra/zm-build) (114 CVEs) - [Zimbra Collaboration Suite](https://radicalnotion.ai/vendor/zimbra/zimbra-collaboration-suite) (25 CVEs) - [zm-mailbox](https://radicalnotion.ai/vendor/zimbra/zm-mailbox) (19 CVEs) - [zm-zcs-lib](https://radicalnotion.ai/vendor/zimbra/zm-zcs-lib) (12 CVEs) - [zm-zcs](https://radicalnotion.ai/vendor/zimbra/zm-zcs) (11 CVEs) - [Zimbra Collaboration Suite (ZCS)](https://radicalnotion.ai/vendor/zimbra/zimbra-collaboration-suite-zcs) (7 CVEs) - [collaboration server](https://radicalnotion.ai/vendor/zimbra/collaboration-server) (6 CVEs) - [Zimbra](https://radicalnotion.ai/vendor/zimbra/zimbra) (5 CVEs) --- Source: [RadicalNotion.AI](https://radicalnotion.ai/vendor/zimbra/collaboration). Licensed CC BY-NC 4.0; attribute RadicalNotion.AI and link the source page when you reuse this data.