How severe is CVE-2018-7921?

CVE-2018-7921 has a CVSS 3.x base score of 6.5, 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 high, integrity none, and availability none.

Is CVE-2018-7921 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-7921?

CVE-2018-7921 affects Huawei B315s-22 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-7921?

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

When was CVE-2018-7921 published?

CVE-2018-7921 was published on 2018-09-12 and last updated on 2026-06-17.

CVE-2018-7921

CVE-2018-7921 is a medium-severity vulnerability in Huawei B315s-22 Firmware with a CVSS 3.x base score of 6.5. Its EPSS exploit-prediction score of 13% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 3.3
EPSS exploit prediction: 13% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Huawei B315s-22 Firmware
Published: 2018-09-12
Last modified: 2026-06-17

Description

Huawei B315s-22 products with software of 21.318.01.00.26 have an information leak vulnerability. Unauthenticated adjacent attackers may exploit this vulnerability to obtain device information.

Frequently asked questions

What is CVE-2018-7921?: Huawei B315s-22 products with software of 21.318.01.00.26 have an information leak vulnerability. Unauthenticated adjacent attackers may exploit this vulnerability to obtain device information.
How severe is CVE-2018-7921?: CVE-2018-7921 has a CVSS 3.x base score of 6.5, 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 high, integrity none, and availability none.
Is CVE-2018-7921 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-7921?: CVE-2018-7921 affects Huawei B315s-22 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-7921?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-7921 published?: CVE-2018-7921 was published on 2018-09-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:huawei:b315s-22_firmware:21.318.01.00.26:*:*:*:*:*:*:*

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