Is CVE-2026-25916 in the CISA KEV catalog?

No. CVE-2026-25916 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-25916?

CVE-2026-25916 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2026-25916?

CVE-2026-25916 has an EPSS score of 0.63% (46th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-25916?

Upgrade roundcube on debian 11 to 1.4.15+dfsg.1-1+deb11u7 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2026-25916

MEDIUM

4.3

CVSS v3

NVD

Description

Roundcube Webmail before 1.5.13 and 1.6 before 1.6.13, when "Block remote images" is used, does not block SVG feImage.

CWE-420

How to fix

Remediation Available

roundcubeDebian

Fixed in:1.4.15+dfsg.1-1+deb11u7CVE-2026-25916

Fixed in:1.6.5+dfsg-1+deb12u7CVE-2026-25916

Fixed in:1.6.13+dfsg-0+deb13u1CVE-2026-25916

Fixed in:1.6.13+dfsg-1CVE-2026-25916

roundcubeUbuntu

Fixed in:1.2~beta+dfsg.1-0ubuntu1+esm8USN-8223-1

Fixed in:1.3.6+dfsg.1-1ubuntu0.1~esm8USN-8223-1

Fixed in:1.4.3+dfsg.1-1ubuntu0.1~esm8USN-8223-1

Fixed in:1.5.0+dfsg.1-2ubuntu0.1~esm6USN-8223-1

Fixed in:1.6.6+dfsg-2ubuntu0.1+esm3USN-8223-1

roundcube-coreUbuntu

Fixed in:1.2~beta+dfsg.1-0ubuntu1+esm8USN-8223-1

Fixed in:1.3.6+dfsg.1-1ubuntu0.1~esm8USN-8223-1

Fixed in:1.4.3+dfsg.1-1ubuntu0.1~esm8USN-8223-1

Fixed in:1.5.0+dfsg.1-2ubuntu0.1~esm6USN-8223-1

Fixed in:1.6.6+dfsg-2ubuntu0.1+esm3USN-8223-1

roundcube-pluginsUbuntu

Fixed in:1.2~beta+dfsg.1-0ubuntu1+esm8USN-8223-1

Fixed in:1.3.6+dfsg.1-1ubuntu0.1~esm8USN-8223-1

Fixed in:1.4.3+dfsg.1-1ubuntu0.1~esm8USN-8223-1

Fixed in:1.5.0+dfsg.1-2ubuntu0.1~esm6USN-8223-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Exploit Intelligence

0.63%probability of exploitation in 30 days

46thpercentile

Moderate risk: more likely to be exploited than 46% of all known CVEs.

References

Other references3

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-02-09.