Is CVE-2023-45235 in the CISA KEV catalog?

No. CVE-2023-45235 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-45235?

CVE-2023-45235 has a CVSS v3 base score of 8.3 (HIGH).

What is the EPSS score for CVE-2023-45235?

CVE-2023-45235 has an EPSS score of 1.21% (65th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-45235?

Upgrade edk2 on debian 11 to 2020.11-2+deb11u3 or later. Fixes are available for 23 affected products.

CVE & CISA-KEV Catalog

CVE-2023-45235

HIGH

8.3

CVSS v3

NVD

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.

CWE-119Buffer Overflow

How to fix

Remediation Available

edk2Debian

Fixed in:2020.11-2+deb11u3CVE-2023-45235

Fixed in:2022.11-6+deb12u1CVE-2023-45235

Fixed in:2023.11-6CVE-2023-45235

edk2Rocky

Fixed in:0:20220126gitbb1bba3d77-2.el8_6.6RHSA-2024:8455

Fixed in:0:20190829git37eef91017ad-9.el8_2.5RHSA-2024:6849

Fixed in:0:20220126gitbb1bba3d77-13.el8_10RHSA-2024:3017

Fixed in:0:20200602gitca407c7246bf-4.el8_4.6RHSA-2024:8449

Fixed in:0:20220126gitbb1bba3d77-4.el8_8.5RHSA-2024:6845

Fixed in:0:20221207gitfff6d81270b5-9.el9_2.3RHSA-2024:4419

Fixed in:0:20231122-6.el9RHSA-2024:2264

Fixed in:0:20220126gitbb1bba3d77-3.el9_0.5RHSA-2024:6931

edk2Red Hat / RHEL

Fixed in:0:20190829git37eef91017ad-9.el8_2.5RHSA-2024:6849

Fixed in:0:20220126gitbb1bba3d77-13.el8_10RHSA-2024:3017

Fixed in:0:20200602gitca407c7246bf-4.el8_4.6RHSA-2024:8449

Fixed in:0:20220126gitbb1bba3d77-4.el8_8.5RHSA-2024:6845

Fixed in:0:20220126gitbb1bba3d77-2.el8_6.6RHSA-2024:8455

Fixed in:0:20231122-6.el9RHSA-2024:2264

Fixed in:0:20220126gitbb1bba3d77-3.el9_0.5RHSA-2024:6931

Fixed in:0:20221207gitfff6d81270b5-9.el9_2.3RHSA-2024:4419

edk2-aarch64Rocky

Fixed in:0:20220126gitbb1bba3d77-2.el8_6.6RHSA-2024:8455

Fixed in:0:20220126gitbb1bba3d77-13.el8_10RHSA-2024:3017

Fixed in:0:20220126gitbb1bba3d77-4.el8_8.5RHSA-2024:6845

Fixed in:0:20221207gitfff6d81270b5-9.el9_2.3RHSA-2024:4419

Fixed in:0:20220126gitbb1bba3d77-3.el9_0.5RHSA-2024:6931

Fixed in:0:20231122-6.el9RHSA-2024:2264

edk2-aarch64Red Hat / RHEL

Fixed in:0:20220126gitbb1bba3d77-13.el8_10RHSA-2024:3017

Fixed in:0:20220126gitbb1bba3d77-4.el8_8.5RHSA-2024:6845

Fixed in:0:20220126gitbb1bba3d77-2.el8_6.6RHSA-2024:8455

Fixed in:0:20231122-6.el9RHSA-2024:2264

Fixed in:0:20221207gitfff6d81270b5-9.el9_2.3RHSA-2024:4419

Fixed in:0:20220126gitbb1bba3d77-3.el9_0.5RHSA-2024:6931

edk2-debugsourceRocky

Fixed in:0:20231122-6.el9RHSA-2024:2264

Fixed in:0:20221207gitfff6d81270b5-9.el9_2.3RHSA-2024:4419

edk2-debugsourceRed Hat / RHEL

Fixed in:0:20231122-6.el9RHSA-2024:2264

Fixed in:0:20221207gitfff6d81270b5-9.el9_2.3RHSA-2024:4419

edk2-ovmfRed Hat / RHEL

Fixed in:0:20220126gitbb1bba3d77-13.el8_10RHSA-2024:3017

Fixed in:0:20220126gitbb1bba3d77-2.el8_6.6RHSA-2024:8455

Fixed in:0:20220126gitbb1bba3d77-4.el8_8.5RHSA-2024:6845

Fixed in:0:20200602gitca407c7246bf-4.el8_4.6RHSA-2024:8449

Fixed in:0:20190829git37eef91017ad-9.el8_2.5RHSA-2024:6849

Fixed in:0:20231122-6.el9RHSA-2024:2264

Fixed in:0:20220126gitbb1bba3d77-3.el9_0.5RHSA-2024:6931

Fixed in:0:20221207gitfff6d81270b5-9.el9_2.3RHSA-2024:4419

edk2-ovmfRocky

Fixed in:0:20220126gitbb1bba3d77-2.el8_6.6RHSA-2024:8455

Fixed in:0:20220126gitbb1bba3d77-4.el8_8.5RHSA-2024:6845

Fixed in:0:20200602gitca407c7246bf-4.el8_4.6RHSA-2024:8449

Fixed in:0:20220126gitbb1bba3d77-13.el8_10RHSA-2024:3017

Fixed in:0:20190829git37eef91017ad-9.el8_2.5RHSA-2024:6849

Fixed in:0:20231122-6.el9RHSA-2024:2264

Fixed in:0:20221207gitfff6d81270b5-9.el9_2.3RHSA-2024:4419

Fixed in:0:20220126gitbb1bba3d77-3.el9_0.5RHSA-2024:6931

edk2-toolsRocky

Fixed in:0:20221207gitfff6d81270b5-9.el9_2.3RHSA-2024:4419

Fixed in:0:20231122-6.el9RHSA-2024:2264

edk2-toolsRed Hat / RHEL

Fixed in:0:20231122-6.el9RHSA-2024:2264

Fixed in:0:20221207gitfff6d81270b5-9.el9_2.3RHSA-2024:4419

Fixed in:0:20231122-6.el9RHSA-2024:2264

edk2-tools-debuginfoRed Hat / RHEL

Fixed in:0:20221207gitfff6d81270b5-9.el9_2.3RHSA-2024:4419

Fixed in:0:20231122-6.el9RHSA-2024:2264

edk2-tools-debuginfoRocky

Fixed in:0:20231122-6.el9RHSA-2024:2264

Fixed in:0:20221207gitfff6d81270b5-9.el9_2.3RHSA-2024:4419

edk2-tools-docRocky

Fixed in:0:20231122-6.el9RHSA-2024:2264

Fixed in:0:20221207gitfff6d81270b5-9.el9_2.3RHSA-2024:4419

edk2-tools-docRed Hat / RHEL

Fixed in:0:20231122-6.el9RHSA-2024:2264

Fixed in:0:20221207gitfff6d81270b5-9.el9_2.3RHSA-2024:4419

edk2Ubuntu

Fixed in:0~20191122.bd85bf54-2ubuntu3.5USN-6638-1

Fixed in:2022.02-3ubuntu0.22.04.2USN-6638-1

Fixed in:2023.05-2ubuntu0.1USN-6638-1

efi-shell-aa64Ubuntu

Fixed in:2023.05-2ubuntu0.1USN-6638-1

efi-shell-armUbuntu

Fixed in:2023.05-2ubuntu0.1USN-6638-1

efi-shell-x64Ubuntu

Fixed in:2023.05-2ubuntu0.1USN-6638-1

ovmfUbuntu

Fixed in:0~20191122.bd85bf54-2ubuntu3.5USN-6638-1

Fixed in:2022.02-3ubuntu0.22.04.2USN-6638-1

Fixed in:2023.05-2ubuntu0.1USN-6638-1

qemu-efiUbuntu

Fixed in:0~20191122.bd85bf54-2ubuntu3.5USN-6638-1

Fixed in:2022.02-3ubuntu0.22.04.2USN-6638-1

qemu-efi-aarch64Ubuntu

Fixed in:0~20191122.bd85bf54-2ubuntu3.5USN-6638-1

Fixed in:2022.02-3ubuntu0.22.04.2USN-6638-1

Fixed in:2023.05-2ubuntu0.1USN-6638-1

qemu-efi-armUbuntu

Fixed in:0~20191122.bd85bf54-2ubuntu3.5USN-6638-1

Fixed in:2022.02-3ubuntu0.22.04.2USN-6638-1

Fixed in:2023.05-2ubuntu0.1USN-6638-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityLow

AvailabilityHigh

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H

Exploit Intelligence

1.21%probability of exploitation in 30 days

65thpercentile

Moderate risk: more likely to be exploited than 65% of all known CVEs.

References

Vendor Advisory1

github.com

Third-Party Advisory1

packetstormsecurity.com

Mailing List1

openwall.com

Other references4

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

Embed a live status badge for CVE-2023-45235

Markdown

[![CVE-2023-45235](https://tridentstack.com/cve/badge/CVE-2023-45235.svg)](https://tridentstack.com/cve/CVE-2023-45235)

HTML

<a href="https://tridentstack.com/cve/CVE-2023-45235"><img src="https://tridentstack.com/cve/badge/CVE-2023-45235.svg" alt="CVE-2023-45235"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.