CVE-2023-45235: Buffer Overflow in EDK II Network Package
Vulnerability summary
CVE-2023-45235 is a high (CVSS 8.8) vulnerability in tianocore edk2. EPSS estimates a 1.22% chance of exploitation in the next 30 days, higher than 68.8% of scored vulnerabilities.
Not severe (CVSS 8.3, adjacent network); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 11 · Related 7Timeline
- 16-01-2024PublishedVulnerability first disclosed.
- 04-11-2025Last modifiedVulnerability information updated.
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.
CVSS metrics
5 scores · 5 sources · 1 version- CVE.orgCNA8.3HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:HDiffers
- OSV · Red hatEcosystem advisory · calculated8.8HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.22%
Chance of exploitation in the next 30 days
Percentile
69%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.22% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat3 products
- edk2< 0:20220126gitbb1bba3d77-4.el8_8.5 | < 0:20190829git37eef91017ad-9.el8_2.5 | < 0:20220126gitbb1bba3d77-3.el9_0.5 | < 0:20200602gitca407c7246bf-4.el8_4.6 | < 0:20220126gitbb1bba3d77-2.el8_6.6
- edk2-aarch64< 0:20220126gitbb1bba3d77-4.el8_8.5 | < 0:20220126gitbb1bba3d77-3.el9_0.5 | < 0:20220126gitbb1bba3d77-2.el8_6.6
- edk2-ovmf< 0:20220126gitbb1bba3d77-4.el8_8.5 | < 0:20190829git37eef91017ad-9.el8_2.5 | < 0:20220126gitbb1bba3d77-3.el9_0.5 | < 0:20200602gitca407c7246bf-4.el8_4.6 | < 0:20220126gitbb1bba3d77-2.el8_6.6
Debian1 product
- edk2< 2022.11-6+deb12u1 | < 2023.11-6
Tianocore1 product
- edk2edk2-stable202308 | ≤ 202311
Ubuntu1 product
- edk2All versions (No fix recorded) | < 0~20191122.bd85bf54-2ubuntu3.5 | < 2022.02-3ubuntu0.22.04.2
4 vendors · 6 products
References
28 links- www.openwall.com/lists/oss-security/2024/01/16/2Mailing List
