CVE-2018-7921

MEDIUMNVD 6.56.5—Elevated

6.5

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.

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 76.3%
KEV: Not listed

Published

September 12, 2018

Last Modified

November 21, 2024

References (4)

psirt@huaweihttps://www.exploit-db.com/exploits/45971/
psirt@huaweihttps://www.huawei.com/en/psirt/security-notices/huawei-sn-20180903-01-b315s-en
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/45971/
af854a3a-2127-422b-91ae-364da2661108https://www.huawei.com/en/psirt/security-notices/huawei-sn-20180903-01-b315s-en

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-07 15:22 UTCepss_batch
2026-06-07 15:22 UTCepss_batch
2026-06-06 13:45 UTCepss_batch
2026-06-06 13:45 UTCepss_batch
2026-06-05 22:45 UTCepss_batch
2026-06-05 22:45 UTCepss_batch
2026-06-05 06:08 UTCepss_batch
2026-06-05 06:08 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 03:17 UTCEG score recompute
2026-05-28 03:17 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-45971
First seen Dec 11, 2018
Huawei B315s-22 - Information Leak
Open source ↗

Frequently asked(5)

What is CVE-2018-7921?

CVE-2018-7921 is a medium vulnerability published on September 12, 2018. 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.

When was CVE-2018-7921 disclosed?

CVE-2018-7921 was first published in the National Vulnerability Database on September 12, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-7921 actively exploited?

CVE-2018-7921 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 76.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-7921?

CVE-2018-7921 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2018-7921?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-7921, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2018-7921

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-7921?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)