How severe is CVE-2023-45236?

CVE-2023-45236 has a CVSS 3.x base score of 5.8, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2023-45236 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-45236?

CVE-2023-45236 affects Tianocore Edk2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-45236?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-45236 have an EU (EUVD) identifier?

Yes. CVE-2023-45236 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-49542.

When was CVE-2023-45236 published?

CVE-2023-45236 was published on 2024-01-16 and last updated on 2026-06-17.

CVE-2023-45236

CVE-2023-45236 is a medium-severity vulnerability in Tianocore Edk2 with a CVSS 3.x base score of 5.8. 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-338.

Key facts

Severity: Medium (CVSS 3.x base score 5.8)
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-49542
Weakness: CWE-338
Affected product: Tianocore Edk2
Published: 2024-01-16
Last modified: 2026-06-17

Description

EDK2's Network Package is susceptible to a predictable TCP Initial Sequence Number. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality.

Frequently asked questions

What is CVE-2023-45236?: EDK2's Network Package is susceptible to a predictable TCP Initial Sequence Number. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality.
How severe is CVE-2023-45236?: CVE-2023-45236 has a CVSS 3.x base score of 5.8, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2023-45236 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-45236?: CVE-2023-45236 affects Tianocore Edk2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-45236?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-45236 have an EU (EUVD) identifier?: Yes. CVE-2023-45236 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-49542.
When was CVE-2023-45236 published?: CVE-2023-45236 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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