How severe is CVE-2015-2249?

CVE-2015-2249 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2015-2249 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-2249?

CVE-2015-2249 primarily affects Synacor Zimbra Collaboration Server. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-2249?

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

When was CVE-2015-2249 published?

CVE-2015-2249 was published on 2020-01-27 and last updated on 2026-06-17.

CVE-2015-2249

CVE-2015-2249 is a medium-severity vulnerability in Synacor Zimbra Collaboration Server with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Synacor Zimbra Collaboration Server
Published: 2020-01-27
Last modified: 2026-06-17

Description

Zimbra Collaboration before 8.6.0 patch5 has XSS.

Frequently asked questions

What is CVE-2015-2249?: Zimbra Collaboration before 8.6.0 patch5 has XSS.
How severe is CVE-2015-2249?: CVE-2015-2249 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2015-2249 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-2249?: CVE-2015-2249 primarily affects Synacor Zimbra Collaboration Server. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-2249?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-2249 published?: CVE-2015-2249 was published on 2020-01-27 and last updated on 2026-06-17.

References

https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories

Affected products (6)

cpe:2.3:a:synacor:zimbra_collaboration_server:*:*:*:*:*:*:*:*
cpe:2.3:a:synacor:zimbra_collaboration_server:8.6.0:-:*:*:*:*:*:*
cpe:2.3:a:synacor:zimbra_collaboration_server:8.6.0:patch1:*:*:*:*:*:*
cpe:2.3:a:synacor:zimbra_collaboration_server:8.6.0:patch2:*:*:*:*:*:*
cpe:2.3:a:synacor:zimbra_collaboration_server:8.6.0:patch3:*:*:*:*:*:*
cpe:2.3:a:synacor:zimbra_collaboration_server:8.6.0:patch4:*:*:*:*:*:*

More vulnerabilities in Synacor Zimbra Collaboration Server

CVE-2014-8563 — Critical (CVSS 9.8): Synacor Zimbra Collaboration before 8.0.9 allows plaintext command injection during STARTTLS.
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.

All CVEs affecting Synacor Zimbra Collaboration Server →

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