CVE-2020-8342: lenovo system_update
CVSS: 7.3v3.1HighModified
Published 15-09-2020Last modified 17-09-2024
Vulnerability summary
CVE-2020-8342 is a high (CVSS 7.3) vulnerability in lenovo system_update. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.4% of scored vulnerabilities.
CVSS score
7.3/10
010
High · v3.1 (CVE.org)EPSS score
0.22%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 15-09-2020PublishedVulnerability first disclosed.
- 17-09-2024Last modifiedVulnerability information updated.
Description
A race condition vulnerability was reported in Lenovo System Update prior to version 5.07.0106 that could allow escalation of privilege.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 7.3Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:HSources2 sources · 7.0–7.3
- NVDNIST7.0HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HDiffers
Medium 6.9Preferred score · NVD (NIST)
AV:L/AC:M/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
0.22%
Chance of exploitation in the next 30 days
Percentile
11%
Versus all other CVEs
30-day change
0.00 pp
From 0.22% on 20-09-2026
20-09-202620-10-2026
EPSS score0.22%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-367Time-of-check Time-of-use (TOCTOU) Race ConditionThe product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.
- CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
Affected systems
Lenovo1 product
- system_update≥ unspecified, < 5.07.0106 | < 5.07.0106
1 vendor · 1 product