CVE-2015-6541 — Multiple cross-site request forgery (CSRF) vulnerabilities in the Mail interface in Zimbra Collaboration Server (ZCS) before 8.5 allow remote attackers to hijack the authentication of arbitrary users for requests that change account preferences via a SOAP request to service/soap/BatchRequest

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HIGH

Multiple cross-site request forgery (CSRF) vulnerabilities in the Mail interface in Zimbra Collaboration Server (ZCS) before 8.5 allow remote attackers to hijack the authentication of arbitrary users for requests that change account preferences via a SOAP request to service/soap/BatchRequest

Published Apr 8, 2016

8.8

HIGH

CVSS 3.0

EPSS 3.01%

Description

Multiple cross-site request forgery (CSRF) vulnerabilities in the Mail interface in Zimbra Collaboration Server (ZCS) before 8.5 allow remote attackers to hijack the authentication of arbitrary users for requests that change account preferences via a SOAP request to service/soap/BatchRequest.

Affected products

Remediation

No remediation recorded yet.

Metrics

3.01% 0.03014

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.03014

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (12 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	3.01% (0.03014)	86.95th	v5 (v2026.06.15)
Jun 15, 2026	2.99% (0.02989)	85.52th	v5 (v2026.06.15)
Oct 22, 2025	0.27% (0.00267)	49.97th	v4 (v2025.03.14)
Mar 17, 2025	1.31% (0.01305)	78.39th	v4 (v2025.03.14)
Dec 12, 2024	0.95% (0.00951)	83.86th	v3 (v2023.03.01)
Jun 6, 2024	0.84% (0.00840)	82.14th	v3 (v2023.03.01)
Apr 3, 2024	0.96% (0.00956)	82.92th	v3 (v2023.03.01)
Oct 22, 2023	1.02% (0.01023)	82.12th	v3 (v2023.03.01)
Mar 7, 2023	1.21% (0.01210)	83.07th	v3 (v2023.03.01)
Mar 6, 2023	8.38% (0.08382)	93.89th	v2 (v2022.01.01)
Apr 1, 2022	8.38% (0.08382)	93.35th	v2 (v2022.01.01)
Feb 4, 2022	8.38% (0.08382)	82.62th	v2 (v2022.01.01)

Weaknesses (1)

CWE-352

CSRF

References (3)

http://seclists.org/fulldisclosure/2016/Feb/121
mailing-listx_refsource_FULLDISC
https://wiki.zimbra.com/wiki/Security/Collab/86#Notes_from_8.5_.28Jetty.29
x_refsource_CONFIRM
https://www.exploit-db.com/exploits/39500/
exploitx_refsource_EXPLOIT-DB

Link	Providers	Tags
http://seclists.org/fulldisclosure/2016/Feb/121		mailing-listx_refsource_FULLDISC
https://wiki.zimbra.com/wiki/Security/Collab/86#Notes_from_8.5_.28Jetty.29		x_refsource_CONFIRM
https://www.exploit-db.com/exploits/39500/		exploitx_refsource_EXPLOIT-DB

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Apr 8, 2016

Updated Aug 6, 2024

Reserved Aug 20, 2015

Link CVE-2015-6541

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2015-6541

Red Hat

Severity n/a

Public date n/a

Links CVE-2015-6541