How severe is CVE-2018-6291?

CVE-2018-6291 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-2018-6291 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-6291?

CVE-2018-6291 affects Kaspersky Secure Mail Gateway. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-6291?

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

When was CVE-2018-6291 published?

CVE-2018-6291 was published on 2018-02-06 and last updated on 2026-06-17.

CVE-2018-6291

CVE-2018-6291 is a medium-severity vulnerability in Kaspersky Secure Mail Gateway 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: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Kaspersky Secure Mail Gateway
Published: 2018-02-06
Last modified: 2026-06-17

Description

WebConsole Cross-Site Scripting in Kaspersky Secure Mail Gateway version 1.1.

Frequently asked questions

What is CVE-2018-6291?: WebConsole Cross-Site Scripting in Kaspersky Secure Mail Gateway version 1.1.
How severe is CVE-2018-6291?: CVE-2018-6291 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-2018-6291 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-6291?: CVE-2018-6291 affects Kaspersky Secure Mail Gateway. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-6291?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-6291 published?: CVE-2018-6291 was published on 2018-02-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:kaspersky:secure_mail_gateway:1.1:*:*:*:*:*:*:*

More vulnerabilities in Kaspersky Secure Mail Gateway

CVE-2018-6289 — Critical (CVSS 9.8): Configuration file injection leading to Code Execution as Root in Kaspersky Secure Mail Gateway version 1.1.
CVE-2018-6288 — High (CVSS 8.8): Cross-site Request Forgery leading to Administrative account takeover in Kaspersky Secure Mail Gateway version 1.1.
CVE-2018-6290 — High (CVSS 7.8): Local Privilege Escalation in Kaspersky Secure Mail Gateway version 1.1.

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