How severe is CVE-2017-7855?

CVE-2017-7855 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-2017-7855 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-7855?

CVE-2017-7855 affects Icewarp Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-7855?

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

When was CVE-2017-7855 published?

CVE-2017-7855 was published on 2017-08-31 and last updated on 2026-06-17.

CVE-2017-7855

CVE-2017-7855 is a medium-severity vulnerability in Icewarp Server 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)
CVSS v2: 4.3
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Icewarp Server
Published: 2017-08-31
Last modified: 2026-06-17

Description

In the webmail component in IceWarp Server 11.3.1.5, there was an XSS vulnerability discovered in the "language" parameter.

Frequently asked questions

What is CVE-2017-7855?: In the webmail component in IceWarp Server 11.3.1.5, there was an XSS vulnerability discovered in the "language" parameter.
How severe is CVE-2017-7855?: CVE-2017-7855 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-2017-7855 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-7855?: CVE-2017-7855 affects Icewarp Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-7855?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-7855 published?: CVE-2017-7855 was published on 2017-08-31 and last updated on 2026-06-17.

References

https://technical.nttsecurity.com/post/102eegq/cookies-are-delicious

Affected products (1)

cpe:2.3:a:icewarp:server:11.3.1.5:*:*:*:*:*:*:*

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