CVE-2021-42848: lenovo a1_firmware Missing Authorization
Modified
Published 18-05-2022Last modified 04-08-2024
Vulnerability summary
CVE-2021-42848 is a medium (CVSS 5.3) Missing Authorization vulnerability in lenovo a1_firmware. EPSS estimates a 0.75% chance of exploitation in the next 30 days, higher than 54.4% of scored vulnerabilities.
CVSS score
5.3/10
010
Medium · v3.1 (NVD)EPSS score
0.75%
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
An information disclosure vulnerability was reported in some Lenovo Personal Cloud Storage devices that could allow an unauthenticated user to retrieve device and networking details.
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 5.3Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NSources2 sources · 4.3–5.3
- CVE.orgCNA4.3MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NDiffers
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
0.75%
Chance of exploitation in the next 30 days
Percentile
54%
Versus all other CVEs
30-day change
Increase +0.01 pp
From 0.74% on 22-09-2026
22-09-202622-10-2026
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