How severe is CVE-2026-27847?

CVE-2026-27847 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-27847 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-27847?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-27847 have an EU (EUVD) identifier?

Yes. CVE-2026-27847 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8649.

When was CVE-2026-27847 published?

CVE-2026-27847 was published on 2026-02-25 and last updated on 2026-06-17.

CVE-2026-27847

CVE-2026-27847 is a critical-severity vulnerability with a CVSS 3.x base score of 9.8. 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-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8649
Weakness: CWE-89
Published: 2026-02-25
Last modified: 2026-06-17

Description

Due to improper neutralization of special elements, SQL statements can be injected via the handshake of a TLS-SRP connection. This can be used to inject known credentials into the database that can be utilized to successfully complete the handshake and use the protected service. This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.

Frequently asked questions

What is CVE-2026-27847?: Due to improper neutralization of special elements, SQL statements can be injected via the handshake of a TLS-SRP connection. This can be used to inject known credentials into the database that can be utilized to successfully complete the handshake and use the protected service. This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.
How severe is CVE-2026-27847?: CVE-2026-27847 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-27847 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-27847?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-27847 have an EU (EUVD) identifier?: Yes. CVE-2026-27847 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8649.
When was CVE-2026-27847 published?: CVE-2026-27847 was published on 2026-02-25 and last updated on 2026-06-17.

References

https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-009.txt

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