Tianocore: >> Edk2 Security Vulnerabilities
The Ubuntu edk2 UEFI firmware packages accidentally allowed the UEFI Shell to be accessed in Secure Boot environments, possibly allowing bypass of Secure Boot constraints. Versions 2024.05-2ubuntu0.3 and 2024.02-2ubuntu0.3 disable the Shell. Some previous versions inserted a secure-boot-based decision to continue running inside the Shell itself, which is believed to be sufficient to enforce Secure Boot restrictions. This is an additional repair on top of the incomplete fix for CVE-2023-48733.
CVSS Score
8.8
EPSS Score
0.0
Published
2025-11-26
An insecure default to allow UEFI Shell in EDK2 was left enabled in Ubuntu's EDK2. This allows an OS-resident attacker to bypass Secure Boot.
CVSS Score
6.7
EPSS Score
0.0
Published
2024-02-14
An insecure default to allow UEFI Shell in EDK2 was left enabled in LXD. This allows an OS-resident attacker to bypass Secure Boot.
CVSS Score
6.7
EPSS Score
0.0
Published
2024-02-14
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.
CVSS Score
5.3
EPSS Score
0.004
Published
2024-01-16
EDK2's Network Package is susceptible to an infinite loop vulnerability when parsing unknown options in the Destination Options header of IPv6. This
vulnerability can be exploited by an attacker to gain unauthorized
access and potentially lead to a loss of Availability.
CVSS Score
7.5
EPSS Score
0.005
Published
2024-01-16
EDK2's Network Package is susceptible to an infinite lop vulnerability when parsing a PadN option in the Destination Options header of IPv6. This
vulnerability can be exploited by an attacker to gain unauthorized
access and potentially lead to a loss of Availability.
CVSS Score
7.5
EPSS Score
0.005
Published
2024-01-16
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 Score
8.3
EPSS Score
0.003
Published
2024-01-16
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 Score
8.3
EPSS Score
0.003
Published
2024-01-16
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.
CVSS Score
5.8
EPSS Score
0.004
Published
2024-01-16
EDK2's Network Package is susceptible to an out-of-bounds read
vulnerability when processing the IA_NA or IA_TA option in a DHCPv6 Advertise message. This
vulnerability can be exploited by an attacker to gain unauthorized
access and potentially lead to a loss of Confidentiality.
CVSS Score
6.5
EPSS Score
0.001
Published
2024-01-16
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