How severe is CVE-2023-45235?

CVE-2023-45235 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability high.

Is CVE-2023-45235 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-45235?

CVE-2023-45235 affects Tianocore Edk2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-45235?

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-2023-45235 have an EU (EUVD) identifier?

Yes. CVE-2023-45235 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-49541.

When was CVE-2023-45235 published?

CVE-2023-45235 was published on 2024-01-16 and last updated on 2026-06-17.

CVE-2023-45235

CVE-2023-45235 is a high-severity vulnerability in Tianocore Edk2 with a CVSS 3.x base score of 8.3. 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-119.

Key facts

Severity: High (CVSS 3.x base score 8.3)
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-49541
Weakness: CWE-119
Affected product: Tianocore Edk2
Published: 2024-01-16
Last modified: 2026-06-17

Description

EDK2's Network Package is susceptible to a buffer overflow vulnerability when handling Server ID option from a DHCPv6 proxy Advertise message. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality, Integrity and/or Availability.

Frequently asked questions

What is CVE-2023-45235?: EDK2's Network Package is susceptible to a buffer overflow vulnerability when handling Server ID option from a DHCPv6 proxy Advertise message. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality, Integrity and/or Availability.
How severe is CVE-2023-45235?: CVE-2023-45235 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability high.
Is CVE-2023-45235 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-45235?: CVE-2023-45235 affects Tianocore Edk2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-45235?: 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-2023-45235 have an EU (EUVD) identifier?: Yes. CVE-2023-45235 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-49541.
When was CVE-2023-45235 published?: CVE-2023-45235 was published on 2024-01-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:tianocore:edk2:*:*:*:*:*:*:*:*

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