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Systems

CVE-2026-7849

9.3
Critical
EPSS 0.48%Patch availableJul 30, 2026

Unauthenticated remote command injection in config parsing leading to root execution.

common questions

Is CVE-2026-7849 being exploited?

Not confirmed. CVE-2026-7849 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.48% probability of exploitation in the next 30 days.

How severe is CVE-2026-7849?

CVE-2026-7849 is rated Critical with a CVSS score of 9.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2026-7849?

Yes. A fix has been recorded for CVE-2026-7849. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.

What does CVE-2026-7849 affect?

CVE-2026-7849 affects Systems using vulnerable configuration parser, Unix/Linux servers, Network‑exposed management interfaces. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

What should I do about CVE-2026-7849?

Apply vendor patch when released; until then block access to config interfaces, restrict network access, and monitor logs.

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

executive summary
technical analysis
affected
Systems using vulnerable configuration parserUnix/Linux serversNetwork‑exposed management interfaces
impact

Remote unauthenticated command injection into system configuration resulting in root remote code execution and full system compromise.

action required

Immediate action required

affected versions
Phoenix Contact CHARX SEC-3000
  • affected>= 1.0.0 and < 1.9.1
Phoenix Contact CHARX SEC-3050
  • affected>= 1.0.0 and < 1.9.1
Phoenix Contact CHARX SEC-3100
  • affected>= 1.0.0 and < 1.9.1
Phoenix Contact CHARX SEC-3150
  • affected>= 1.0.0 and < 1.9.1

As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.

how to fix
Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.
references
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