Vulnerability in Lenovo Thinkpad
CVE-2020-8341
In Lenovo systems, SMM BIOS Write Protection is used to prevent writes to SPI Flash. While this provides sufficient protection, an additional layer of protection is provided by SPI Protected Range Registers (PRx). After resuming from S3 sleep mode in various versions of BIOS for some Lenovo ThinkPad systems, the PRx is not set. This does not impact the SMM BIOS Write Protection, which keeps systems protected.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.4 (Low). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (25.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Lenovo Thinkpad — versions various
- Lenovo Thinkpad T490 \(20nx\)
- Lenovo Thinkpad T490 \(20nx\) Firmware
- Lenovo Thinkpad T490 \(20qx\)
- Lenovo Thinkpad T490 \(20qx\) Firmware
- Lenovo Thinkpad T490 \(20rx\)
- Lenovo Thinkpad T490 \(20rx\) Firmware
- Lenovo Thinkpad T490s \(20nx\)
- Lenovo Thinkpad T490s \(20nx\) Firmware
- Lenovo Thinkpad T495 Drift
Public proof-of-concept exploits
References
- support.lenovo.com/us/en/product_security/LEN-30042 (Vendor Advisory)
Frequently asked questions
- What is CVE-2020-8341?
- CVE-2020-8341 is a low-severity vulnerability in Lenovo Thinkpad. CVSS score: 2.4/10. Published 2020-09-01.
- How severe is CVE-2020-8341?
- Low severity. CVSS v3 base score is 2.4 out of 10.
- Is CVE-2020-8341 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.