CVE-2026-106931

Q: How do I fix CVE-2026-106931?

Upgrade siteguard to 3.10 or later.

Q: Is CVE-2026-106931 being actively exploited?

Yes. CVE-2026-106931 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2026-10-23. Treat it as a priority whatever its CVSS score says.

Q: How severe is CVE-2026-106931?

CVE-2026-106931 has a CVSS v3 base score of 7.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2026-106931 affect?

Published advisories record a fix for siteguard (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGHCISA KEVEPSS 85th pctl

7.8

CVSS v3

NVD

Description

SiteGuard Server Edition contains an OS command injection vulnerability, which may allow an attacker to execute arbitrary OS commands with root or SYSTEM privileges on the system running the affected product.

CWE-78OS Command Injection

How to fix

Remediation Available

siteguardNVD

Affected:>= 2.20, < 3.10Fixed in:3.10CVE-2026-106931derived from NVD

Affected:>= 2.20, < 7.00Fixed in:7.00CVE-2026-106931derived from NVD

Affected:>= 2.20, < 8.00Fixed in:8.00CVE-2026-106931derived from NVD

Affected:>= 4.10, < 8.00Fixed in:8.00CVE-2026-106931derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

2.53%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Remediation due: 2026-10-23

References

Vendor Advisory1

eg-secure.co.jp

Third-Party Advisory1

jvn.jp

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-78 (OS Command Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-1498	Critical	9.8	100%	KEV	Fix
CVE-2014-6271	Critical	9.8	100%	KEV	Fix
CVE-2019-16920	Critical	9.8	100%	KEV	-
CVE-2022-44877	Critical	9.8	100%	KEV	Fix
CVE-2020-8515	Critical	9.8	100%	KEV	-
CVE-2020-9054	Critical	9.8	100%	KEV	Fix

Common questions

How do I fix CVE-2026-106931?

Upgrade siteguard to 3.10 or later.

Is CVE-2026-106931 being actively exploited?

Yes. CVE-2026-106931 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2026-10-23. Treat it as a priority whatever its CVSS score says.

How severe is CVE-2026-106931?

CVE-2026-106931 has a CVSS v3 base score of 7.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-106931 affect?

Published advisories record a fix for siteguard (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-106931

Markdown

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This vulnerability is actively exploited in the wild

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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 2026-10-21.