CVE-2014-8563
CVE-2014-8563 is a critical-severity vulnerability in Synacor Zimbra Collaboration Server 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. The underlying weakness is classified as CWE-78.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 3% (83rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-78
- Affected product: Synacor Zimbra Collaboration Server
- Published:
- Last modified:
Description
Synacor Zimbra Collaboration before 8.0.9 allows plaintext command injection during STARTTLS.
Frequently asked questions
- What is CVE-2014-8563?
- Synacor Zimbra Collaboration before 8.0.9 allows plaintext command injection during STARTTLS.
- How severe is CVE-2014-8563?
- CVE-2014-8563 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-2014-8563 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2014-8563?
- CVE-2014-8563 affects Synacor Zimbra Collaboration Server. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2014-8563?
- 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-2014-8563 published?
- CVE-2014-8563 was published on 2020-01-27 and last updated on 2026-06-17.
References
- https://bugzilla.zimbra.com/show_bug.cgi?id=96105
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
Affected products (1)
- cpe:2.3:a:synacor:zimbra_collaboration_server:*:*:*:*:*:*:*:*
More vulnerabilities in Synacor Zimbra Collaboration Server
- CVE-2014-5500 — Medium (CVSS 6.1): Synacor Zimbra Collaboration before 8.0.8 has XSS.
- CVE-2015-2230 — Medium (CVSS 6.1): Synacor Zimbra Collaboration Server 8.x before 8.7.0 has Reflected XSS in admin console.
- CVE-2019-11318 — Medium (CVSS 5.4): Zimbra Collaboration before 8.8.12 Patch 1 has persistent XSS.
- CVE-2015-2249 — Medium (CVSS 5.4): Zimbra Collaboration before 8.6.0 patch5 has XSS.
All CVEs affecting Synacor Zimbra Collaboration Server →
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