How severe is CVE-2026-45433?

CVE-2026-45433 has a CVSS 4.0 base score of 8.7, rated high severity.

Is CVE-2026-45433 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-45433?

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

Does CVE-2026-45433 have an EU (EUVD) identifier?

Yes. CVE-2026-45433 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34251.

When was CVE-2026-45433 published?

CVE-2026-45433 was published on 2026-06-04 and last updated on 2026-06-17.

CVE-2026-45433

CVE-2026-45433 is a high-severity vulnerability with a CVSS 4.0 base score of 8.7. 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-321.

Key facts

Severity: High (CVSS 4.0 base score 8.7)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34251
Weakness: CWE-321
Published: 2026-06-04
Last modified: 2026-06-17

Description

This vulnerability exists in GX Earth 2022 ONT models due to the presence of hardcoded RSA private key within the device firmware. A remote attacker could exploit this vulnerability by extracting the cryptographic private key from the firmware, which could lead to decryption of HTTPS traffic and Man-in-the-Middle (MITM) attacks on the targeted device.

Frequently asked questions

What is CVE-2026-45433?: This vulnerability exists in GX Earth 2022 ONT models due to the presence of hardcoded RSA private key within the device firmware. A remote attacker could exploit this vulnerability by extracting the cryptographic private key from the firmware, which could lead to decryption of HTTPS traffic and Man-in-the-Middle (MITM) attacks on the targeted device.
How severe is CVE-2026-45433?: CVE-2026-45433 has a CVSS 4.0 base score of 8.7, rated high severity.
Is CVE-2026-45433 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-45433?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-45433 have an EU (EUVD) identifier?: Yes. CVE-2026-45433 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34251.
When was CVE-2026-45433 published?: CVE-2026-45433 was published on 2026-06-04 and last updated on 2026-06-17.

References

https://www.cert-in.org.in/s2cMainServlet?pageid=PUBVLNOTES01&VLCODE=CIVN-2026-0288

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