CVE-2023-45235

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
Elevated
8.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.2%CVSS: 8.3Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
8.3
EG Score
8.3HIGHmedium confidence
EG Risk
68
EG Risk 68/100CISA SSVC

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%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
1.2%
EPSS %ILE
67th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

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

Locked Out | Packet Storm

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-2023-45235(4)

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 / EcosystemFix (by version range) / PatchReleasedSource
ubuntuqemu-efi-arm (2023.05-2ubuntu0.1) @ mantic2026-05-24ubuntu
redhatedk2-0:20200602gitca407c7246bf-4.el8_4.62024-10-24redhat
redhatedk2-0:20220126gitbb1bba3d77-2.el8_6.62024-10-24redhat
redhatedk2-0:20220126gitbb1bba3d77-3.el9_0.52024-09-23redhat
redhatedk2-0:20190829git37eef91017ad-9.el8_2.52024-09-19redhat
redhatedk2-0:20220126gitbb1bba3d77-4.el8_8.52024-09-19redhat
redhatedk2-0:20221207gitfff6d81270b5-9.el9_2.32024-07-09redhat
redhatedk2-0:20220126gitbb1bba3d77-13.el8_102024-05-22redhat
redhatedk2-0:20231122-6.el92024-04-30redhat

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 rangeFix by version rangeDependents
edk22020.11-2, 2020.11-2+deb11u1, 2020.11-2+deb11u2
  • every version up to 2020.11-2+deb11u3: fixed in 2020.11-2+deb11u3
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
edk22022.11-6
  • every version up to 2022.11-6+deb12u1: fixed in 2022.11-6+deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
edk2—
  • every version up to 2023.11-6: fixed in 2023.11-6
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
edk2—
  • every version up to 2023.11-6: fixed in 2023.11-6
—

Weakness Classification(1)

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

Additional Vendor Advisories

(6)

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 8× in last 7d / 33× 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 197 total refreshes for this CVE.

  1. 2026-10-05 17:41 UTCEPSS rescore
  2. 2026-10-04 23:20 UTCEPSS rescore
  3. 2026-10-03 14:23 UTCEPSS rescore
  4. 2026-10-03 14:23 UTCEPSS rescore
  5. 2026-10-01 19:48 UTCEPSS rescore
  6. 2026-09-30 16:31 UTCEG score recompute
  7. 2026-09-30 15:01 UTCEPSS rescore
  8. 2026-09-29 15:17 UTCEPSS rescore
  9. 2026-09-28 13:49 UTCEPSS rescore
  10. 2026-09-28 13:49 UTCEPSS rescore
  11. 2026-09-27 13:42 UTCEPSS rescore
  12. 2026-09-27 13:42 UTCEPSS rescore
  13. 2026-09-26 15:56 UTCEPSS rescore
  14. 2026-09-26 00:22 UTCEPSS rescore
  15. 2026-09-24 14:01 UTCEPSS rescore
  16. 2026-09-24 14:01 UTCEPSS rescore
  17. 2026-09-23 13:46 UTCEPSS rescore
  18. 2026-09-22 10:15 UTCOSV refresh
  19. 2026-09-20 20:14 UTCEPSS rescore
  20. 2026-09-20 20:14 UTCEPSS rescore
  21. 2026-09-18 19:25 UTCEPSS rescore
  22. 2026-09-17 19:25 UTCEPSS rescore
  23. 2026-09-16 14:06 UTCEPSS rescore
  24. 2026-09-16 14:06 UTCEPSS rescore
  25. 2026-09-16 05:11 UTCEPSS rescore
Show 75 more
  1. 2026-09-13 16:44 UTCEPSS rescore
  2. 2026-09-12 14:58 UTCEPSS rescore
  3. 2026-09-11 14:50 UTCEPSS rescore
  4. 2026-09-11 09:34 UTCEPSS rescore
  5. 2026-09-08 21:58 UTCEPSS rescore
  6. 2026-09-07 15:59 UTCEPSS rescore
  7. 2026-09-06 13:45 UTCEPSS rescore
  8. 2026-09-06 13:45 UTCEPSS rescore
  9. 2026-09-05 15:26 UTCEPSS rescore
  10. 2026-09-04 13:58 UTCEPSS rescore
  11. 2026-09-04 05:04 UTCEPSS rescore
  12. 2026-09-03 07:29 UTCOSV refresh
  13. 2026-09-02 14:09 UTCEPSS rescore
  14. 2026-09-01 13:51 UTCEPSS rescore
  15. 2026-08-30 19:15 UTCEPSS rescore
  16. 2026-08-30 01:20 UTCEPSS rescore
  17. 2026-08-28 21:39 UTCEPSS rescore
  18. 2026-08-27 14:23 UTCEPSS rescore
  19. 2026-08-26 14:44 UTCEPSS rescore
  20. 2026-08-26 14:43 UTCEPSS rescore
  21. 2026-08-25 13:46 UTCEPSS rescore
  22. 2026-08-23 00:17 UTCEPSS rescore
  23. 2026-08-21 23:47 UTCEPSS rescore
  24. 2026-08-20 22:53 UTCEPSS rescore
  25. 2026-08-19 17:02 UTCEPSS rescore
  26. 2026-08-19 17:02 UTCEPSS rescore
  27. 2026-08-18 13:46 UTCEPSS rescore
  28. 2026-08-17 13:45 UTCEPSS rescore
  29. 2026-08-16 20:56 UTCOSV refresh
  30. 2026-08-16 14:54 UTCEPSS rescore
  31. 2026-08-16 02:12 UTCEPSS rescore
  32. 2026-08-15 01:28 UTCEPSS rescore
  33. 2026-08-15 01:28 UTCEPSS rescore
  34. 2026-08-13 21:58 UTCEPSS rescore
  35. 2026-08-12 13:48 UTCEPSS rescore
  36. 2026-08-11 13:39 UTCEPSS rescore
  37. 2026-08-09 13:44 UTCEPSS rescore
  38. 2026-08-09 13:44 UTCEPSS rescore
  39. 2026-08-08 16:35 UTCEPSS rescore
  40. 2026-08-07 16:25 UTCEPSS rescore
  41. 2026-08-06 13:45 UTCEPSS rescore
  42. 2026-08-05 19:15 UTCEPSS rescore
  43. 2026-08-04 15:07 UTCEPSS rescore
  44. 2026-08-03 10:34 UTCEPSS rescore
  45. 2026-08-03 10:34 UTCEPSS rescore
  46. 2026-08-02 02:25 UTCEPSS rescore
  47. 2026-08-02 02:25 UTCEPSS rescore
  48. 2026-08-01 15:06 UTCOSV refresh
  49. 2026-08-01 04:14 UTCEPSS rescore
  50. 2026-08-01 04:13 UTCEPSS rescore
  51. 2026-07-30 16:26 UTCEPSS rescore
  52. 2026-07-30 16:26 UTCEPSS rescore
  53. 2026-07-30 01:28 UTCEPSS rescore
  54. 2026-07-30 01:28 UTCEPSS rescore
  55. 2026-07-28 15:34 UTCEPSS rescore
  56. 2026-07-28 15:34 UTCEPSS rescore
  57. 2026-07-26 14:52 UTCEPSS rescore
  58. 2026-07-26 14:52 UTCEPSS rescore
  59. 2026-07-25 14:16 UTCEPSS rescore
  60. 2026-07-24 14:16 UTCEPSS rescore
  61. 2026-07-23 14:16 UTCEPSS rescore
  62. 2026-07-23 14:16 UTCEPSS rescore
  63. 2026-07-23 02:27 UTCEG score recompute
  64. 2026-07-22 23:13 UTCEG score recompute
  65. 2026-07-22 14:06 UTCEPSS rescore
  66. 2026-07-21 15:23 UTCEPSS rescore
  67. 2026-07-21 15:23 UTCEPSS rescore
  68. 2026-07-20 17:06 UTCEPSS rescore
  69. 2026-07-19 14:29 UTCEPSS rescore
  70. 2026-07-19 02:27 UTCEPSS rescore
  71. 2026-07-18 10:03 UTCEPSS rescore
  72. 2026-07-18 10:03 UTCEPSS rescore
  73. 2026-07-16 17:01 UTCEPSS rescore
  74. 2026-07-16 17:01 UTCEPSS rescore
  75. 2026-07-15 16:56 UTCEPSS rescore

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-45235?
CVE-2023-45235 is a high vulnerability published on January 16, 2024. 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…
When was CVE-2023-45235 disclosed?
CVE-2023-45235 was first published 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-2023-45235 actively exploited?
CVE-2023-45235 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.2% probability of exploitation in the next 30 days (67th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-45235?
CVE-2023-45235 has a CVSS v3 base score of 8.3 (NVD).
How do I remediate CVE-2023-45235?
A fix for CVE-2023-45235 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2023-45235 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-45235

Explore →

Is Your Infrastructure Affected by CVE-2023-45235?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs