CVE-2021-42852: lenovo a1_firmware OS Command Injection
Modified
Published 18-05-2022Last modified 04-08-2024
Vulnerability summary
CVE-2021-42852 is a high (CVSS 8.0) OS Command Injection vulnerability in lenovo a1_firmware. EPSS estimates a 0.78% chance of exploitation in the next 30 days, higher than 55.5% of scored vulnerabilities.
CVSS score
8.0/10
010
High · v3.1 (CVE.org)EPSS score
0.78%
0%100%
Low · -0.01 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded
Timeline
- 18-05-2022PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A command injection vulnerability was reported in some Lenovo Personal Cloud Storage devices that could allow an authenticated user to execute operating system commands by sending a crafted packet to the device.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 8.0Preferred score · CVE.org (CNA)
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST8.0HighCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
High 7.7Preferred score · NVD (NIST)
AV:A/AC:L/Au:S/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
0.78%
Chance of exploitation in the next 30 days
Percentile
56%
Versus all other CVEs
30-day change
Decrease -0.01 pp
From 0.79% on 23-09-2026
23-09-202623-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Lenovo10 products
- a1_firmware< 5.3.6.a1
- personal cloud storage a1≥ unspecified, < 5.3.6.a1
- personal cloud storage t1≥ unspecified, < 5.3.6.t1
- personal cloud storage t2≥ unspecified, < 5.3.8.t2
- personal cloud storage t2pro≥ unspecified, < 5.3.7.t2-pro
1 vendor · 10 products