MEDIUM
Linaro's open source TEE solution called OP-TEE, version 2.4.0 (and older) is vulnerable a timing attack in the Montgomery parts of libMPA in OP-TEE resulting in a compromised private RSA key
Published Jan 2, 2018
5.9
MEDIUMCVSS 3.0
EPSS 1.57%
Description
Linaro's open source TEE solution called OP-TEE, version 2.4.0 (and older) is vulnerable a timing attack in the Montgomery parts of libMPA in OP-TEE resulting in a compromised private RSA key.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
5.9 MEDIUM NVD
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact None
Availability Impact None
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.57% 0.01565
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01565
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.57% (0.01565) | 74.39th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.57% (0.01565) | 74.18th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.11% (0.00114) | 45.52th | v3 (v2023.03.01) |
| Jul 13, 2024 | 0.11% (0.00114) | 45.52th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.11% (0.00112) | 43.52th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.10% (0.00105) | 41.28th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.15% (0.00154) | 51.06th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.28% (0.00280) | 63.42th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.83% (0.00833) | 24.58th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
Weaknesses (1)
References (3)
- https://github.com/OP-TEE/optee_os/blob/2.5.0/CHANGELOG.md x_refsource_CONFIRMThird Party Advisory
- https://github.com/OP-TEE/optee_os/pull/1610 x_refsource_CONFIRMThird Party Advisory
- https://www.op-tee.org/security-advisories/ x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/OP-TEE/optee_os/blob/2.5.0/CHANGELOG.md | x_refsource_CONFIRMThird Party Advisory | |
| https://github.com/OP-TEE/optee_os/pull/1610 | x_refsource_CONFIRMThird Party Advisory | |
| https://www.op-tee.org/security-advisories/ | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 2, 2018
Updated Sep 17, 2024
Reserved Jan 2, 2018
Link CVE-2017-1000413
CISA Vulnrichment
Updated n/a