Описание
MITRE: CVE-2026-6727 TPM 2.0 RSA OAEP Timing Side-Channel Vulnerability
CVE-2026-6727 is an Information Disclosure vulnerability in the TPM 2.0 reference implementation involving an RSA OAEP timing side channel. MITRE assigned this CVE on behalf of the Trusted Computing Group. This document incorporates updates to Microsoft Windows that address this vulnerability.
Please see CVE-2026-6727 for more information.
FAQ
What type of information could be disclosed by this vulnerability
If the attacker has both the ability to modify the encrypted secret where it is stored and to observe the precise timing for the secret being decrypted by the application, the attacker could infer the original secret across many decryption attempts.
According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires an attacker to carefully time their actions to exploit the timing differences in the execution of specific operations. They must accurately measure these timing variations to infer sensitive information or gain unauthorized access. This often involves sophisticated techniques to manipulate and observe the timing behavior of the target system.
Do I need to do anything additional in order to be protected from this vulnerability?
Yes, you will need to install the following packages:
- Windows Server 2022: KB5123303 (restart required)
Обновления
| Продукт | Статья | Обновление |
|---|---|---|
| Windows 10 Version 1607 for 32-bit Systems | ||
| Windows 10 Version 1607 for x64-based Systems | ||
| Windows 10 Version 1809 for 32-bit Systems | ||
| Windows 10 Version 1809 for x64-based Systems | ||
| Windows Server 2019 | ||
| Windows Server 2019 (Server Core installation) | ||
| Windows Server 2022 | ||
| Windows Server 2022 (Server Core installation) | ||
| Windows 10 Version 21H2 for 32-bit Systems | ||
| Windows 10 Version 21H2 for ARM64-based Systems |
Показывать по
Возможность эксплуатации
Publicly Disclosed
Exploited
Latest Software Release
EPSS
5.9 Medium
CVSS3
Связанные уязвимости
A timing side-channel vulnerability exists in the RSA OAEP decryption implementation. A privileged local attacker with access to the TPM command interface may be able to exploit timing differences to recover information that could allow decryption of ciphertexts encrypted to TPM-managed RSA keys, including the RSA Endorsement Key (EK), including import blobs, credential blobs, and session salts. Under certain conditions, this may also enable the forgery of TPM 2.0 attestations. Refer to TCGVRT0011.
A timing side-channel vulnerability exists in the RSA OAEP decryption implementation. A privileged local attacker with access to the TPM command interface may be able to exploit timing differences to recover information that could allow decryption of ciphertexts encrypted to TPM-managed RSA keys, including the RSA Endorsement Key (EK), including import blobs, credential blobs, and session salts. Under certain conditions, this may also enable the forgery of TPM 2.0 attestations. Refer to TCGVRT0011.
A timing side-channel vulnerability exists in the RSA OAEP decryption ...
A timing side-channel vulnerability exists in the RSA OAEP decryption implementation. A privileged local attacker with access to the TPM command interface may be able to exploit timing differences to recover information that could allow decryption of ciphertexts encrypted to TPM-managed RSA keys, including the RSA Endorsement Key (EK), including import blobs, credential blobs, and session salts. Under certain conditions, this may also enable the forgery of TPM 2.0 attestations. Refer to TCGVRT0011.
EPSS
5.9 Medium
CVSS3