How severe is CVE-2021-42848?

CVE-2021-42848 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-42848 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42848?

CVE-2021-42848 primarily affects Lenovo A1 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-42848?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-42848 published?

CVE-2021-42848 was published on 2022-05-18 and last updated on 2026-06-17.

CVE-2021-42848

CVE-2021-42848 is a medium-severity vulnerability in Lenovo A1 Firmware with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Lenovo A1 Firmware
Published: 2022-05-18
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-42848?: 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.
How severe is CVE-2021-42848?: CVE-2021-42848 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-42848 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42848?: CVE-2021-42848 primarily affects Lenovo A1 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-42848?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-42848 published?: CVE-2021-42848 was published on 2022-05-18 and last updated on 2026-06-17.

References

https://iknow.lenovo.com.cn/detail/dc_200017.html

Affected products (5)

cpe:2.3:o:lenovo:a1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:t1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:x1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:t2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:t2pro_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Lenovo A1 Firmware

CVE-2021-42850 — High (CVSS 8.8): A weak default administrator password for the web interface and serial port was reported in some Lenovo Personal Cloud…
CVE-2021-42852 — High (CVSS 8.0): A command injection vulnerability was reported in some Lenovo Personal Cloud Storage devices that could allow an…
CVE-2021-42849 — Medium (CVSS 6.8): A weak default password for the serial port was reported in some Lenovo Personal Cloud Storage devices that could allow…
CVE-2021-42851 — Medium (CVSS 6.3): A vulnerability was reported in some Lenovo Personal Cloud Storage devices that could allow an unauthenticated user to…

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