CVE-2023-45234

HIGHNVD 8.38.3—
EchelonGraph scoreMEDIUM confidence

Score 8.3 from GitHub Security Advisory (severity: HIGH) published 2024-01-16. NVD baseline CVSS 8.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.3Exploit: None knownExposed: 0

A fix is available — apply it.

EDK2's Network Package is susceptible to a buffer overflow vulnerability when processing DNS Servers option from a DHCPv6 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.

CVSS v3
8.3
EG Score
8.3(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity83% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
67%
KEV
Not listed

Published

January 16, 2024

Last Modified

November 4, 2025

Advisory Details (6)

Auto-updated Sep 6, 2026
Patch available. Sources: github.
generic

[SECURITY] Fedora 39 Update: edk2-20240214-2.fc39 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/[email protected]/message/SJ42V7O7F4OU6R7QSQQECLB6LDHKZIMQ/
generic Patch Available

[SECURITY] [DLA 4207-1] edk2 security update

https://lists.debian.org/debian-lts-announce/2025/06/msg00007.html
github Patch Available

Vulnerabilities in EDK2 NetworkPkg IP stack implementation · Advisory · tianocore/edk2 · GitHub

https://github.com/tianocore/edk2/security/advisories/GHSA-hc6x-cw6p-gj7h
generic

oss-security - CVE-2023-45229 and others: Multiple vulnerabilities in EDK II UEFI stack (PixieFAIL)

http://www.openwall.com/lists/oss-security/2024/01/16/2
generic

Packet Storm Security

http://packetstormsecurity.com/files/176574/PixieFail-Proof-Of-Concepts.html
generic

NetApp Product Security

https://security.netapp.com/advisory/ntap-20240307-0011/

Vendor Advisories for CVE-2023-45234(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(9)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuqemu-efi-arm (2023.05-2ubuntu0.1) @ mantic2026-05-24ubuntu
redhatedk2-0:20220126gitbb1bba3d77-2.el8_6.42024-05-30redhat
redhatedk2-0:20190829git37eef91017ad-9.el8_2.42024-04-09redhat
redhatedk2-0:20220126gitbb1bba3d77-4.el8_8.32024-03-19redhat
redhatedk2-0:20200602gitca407c7246bf-4.el8_4.52024-03-13redhat
redhatedk2-0:20221207gitfff6d81270b5-9.el9_2.22024-03-05redhat
redhatedk2-0:20230524-4.el9_3.22024-03-05redhat
redhatedk2-0:20220126gitbb1bba3d77-3.el9_0.42024-03-05redhat
redhatedk2-0:20220126gitbb1bba3d77-6.el8_9.62024-03-04redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
edk22020.11-2, 2020.11-2+deb11u1, 2020.11-2+deb11u22020.11-2+deb11u3—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
edk22022.11-62022.11-6+deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
edk2—2023.11-6—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
edk2—2023.11-6—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(8)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 7× in last 7d / 29× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 174 total refreshes for this CVE.

  1. 2026-09-18 19:25 UTCEPSS rescore
  2. 2026-09-17 19:25 UTCEPSS rescore
  3. 2026-09-16 14:06 UTCEPSS rescore
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  6. 2026-09-13 16:44 UTCEPSS rescore
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  10. 2026-09-08 21:58 UTCEPSS rescore
  11. 2026-09-07 15:59 UTCEPSS rescore
  12. 2026-09-06 13:45 UTCEPSS rescore
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  14. 2026-09-05 15:26 UTCEPSS rescore
  15. 2026-09-04 13:58 UTCEPSS rescore
  16. 2026-09-04 05:04 UTCEPSS rescore
  17. 2026-09-03 07:30 UTCOSV refresh
  18. 2026-09-02 14:09 UTCEPSS rescore
  19. 2026-09-01 13:51 UTCEPSS rescore
  20. 2026-08-30 19:15 UTCEPSS rescore
  21. 2026-08-30 01:20 UTCEPSS rescore
  22. 2026-08-28 21:39 UTCEPSS rescore
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  24. 2026-08-26 14:44 UTCEPSS rescore
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  1. 2026-08-25 13:46 UTCEPSS rescore
  2. 2026-08-23 00:17 UTCEPSS rescore
  3. 2026-08-21 23:47 UTCEPSS rescore
  4. 2026-08-20 22:53 UTCEPSS rescore
  5. 2026-08-19 17:02 UTCEPSS rescore
  6. 2026-08-19 17:02 UTCEPSS rescore
  7. 2026-08-18 13:46 UTCEPSS rescore
  8. 2026-08-17 13:45 UTCEPSS rescore
  9. 2026-08-16 20:56 UTCOSV refresh
  10. 2026-08-16 14:54 UTCEPSS rescore
  11. 2026-08-16 02:12 UTCEPSS rescore
  12. 2026-08-15 01:28 UTCEPSS rescore
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  14. 2026-08-13 21:58 UTCEPSS rescore
  15. 2026-08-12 13:48 UTCEPSS rescore
  16. 2026-08-11 13:39 UTCEPSS rescore
  17. 2026-08-09 13:44 UTCEPSS rescore
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  19. 2026-08-08 16:35 UTCEPSS rescore
  20. 2026-08-07 16:25 UTCEPSS rescore
  21. 2026-08-06 13:45 UTCEPSS rescore
  22. 2026-08-05 19:15 UTCEPSS rescore
  23. 2026-08-04 15:07 UTCEPSS rescore
  24. 2026-08-03 10:34 UTCEPSS rescore
  25. 2026-08-03 10:34 UTCEPSS rescore
  26. 2026-08-02 02:25 UTCEPSS rescore
  27. 2026-08-02 02:25 UTCEPSS rescore
  28. 2026-08-01 15:06 UTCOSV refresh
  29. 2026-08-01 04:14 UTCEPSS rescore
  30. 2026-08-01 04:13 UTCEPSS rescore
  31. 2026-07-30 16:26 UTCEPSS rescore
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  37. 2026-07-26 14:52 UTCEPSS rescore
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  39. 2026-07-25 14:16 UTCEPSS rescore
  40. 2026-07-23 14:16 UTCEPSS rescore
  41. 2026-07-23 14:16 UTCEPSS rescore
  42. 2026-07-23 02:27 UTCEG score recompute
  43. 2026-07-22 23:13 UTCEG score recompute
  44. 2026-07-22 14:06 UTCEPSS rescore
  45. 2026-07-21 15:23 UTCEPSS rescore
  46. 2026-07-21 15:23 UTCEPSS rescore
  47. 2026-07-20 17:06 UTCEPSS rescore
  48. 2026-07-19 14:29 UTCEPSS rescore
  49. 2026-07-19 02:27 UTCEPSS rescore
  50. 2026-07-18 10:03 UTCEPSS rescore
  51. 2026-07-18 10:03 UTCEPSS rescore
  52. 2026-07-16 17:01 UTCEPSS rescore
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  54. 2026-07-15 16:56 UTCEPSS rescore
  55. 2026-07-15 16:56 UTCEPSS rescore
  56. 2026-07-15 01:58 UTCEPSS rescore
  57. 2026-07-14 22:10 UTCOSV refresh
  58. 2026-07-13 22:28 UTCEPSS rescore
  59. 2026-07-13 22:28 UTCEPSS rescore
  60. 2026-07-13 06:11 UTCEPSS rescore
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  64. 2026-07-11 08:26 UTCEPSS rescore
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  66. 2026-07-09 19:08 UTCEPSS rescore
  67. 2026-07-08 15:13 UTCEPSS rescore
  68. 2026-07-07 13:44 UTCEPSS rescore
  69. 2026-07-06 16:26 UTCEPSS rescore
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  72. 2026-07-05 02:29 UTCEPSS rescore
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  74. 2026-07-01 15:05 UTCEPSS rescore
  75. 2026-06-30 23:21 UTCEPSS rescore

Frequently asked(5)

What is CVE-2023-45234?
CVE-2023-45234 is a high vulnerability published on January 16, 2024. EDK2's Network Package is susceptible to a buffer overflow vulnerability when processing DNS Servers option from a DHCPv6 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…
When was CVE-2023-45234 disclosed?
CVE-2023-45234 was first published in the National Vulnerability Database on January 16, 2024, with the most recent update on November 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-45234 actively exploited?
CVE-2023-45234 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 33.3% of all scored CVEs.
What is the CVSS score of CVE-2023-45234?
CVE-2023-45234 has a CVSS v3 base score of 8.3 (NVD).
How do I remediate CVE-2023-45234?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-45234, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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