How severe is CVE-2018-18371?

CVE-2018-18371 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2018-18371 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-18371?

CVE-2018-18371 primarily affects Broadcom Advanced Secure Gateway. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-18371?

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

When was CVE-2018-18371 published?

CVE-2018-18371 was published on 2019-08-30 and last updated on 2026-06-17.

CVE-2018-18371

CVE-2018-18371 is a medium-severity vulnerability in Broadcom Advanced Secure Gateway with a CVSS 3.x base score of 6.5. 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-327.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-327
Affected product: Broadcom Advanced Secure Gateway
Published: 2019-08-30
Last modified: 2026-06-17

Description

The ASG/ProxySG FTP proxy WebFTP mode allows intercepting FTP connections where a user accesses an FTP server via a ftp:// URL in a web browser. An information disclosure vulnerability in the WebFTP mode allows a malicious user to obtain plaintext authentication credentials for a remote FTP server from the ASG/ProxySG's web listing of the FTP server. Affected versions: ASG 6.6 and 6.7 prior to 6.7.4.2; ProxySG 6.5 prior to 6.5.10.15, 6.6, and 6.7 prior to 6.7.4.2.

Frequently asked questions

What is CVE-2018-18371?: The ASG/ProxySG FTP proxy WebFTP mode allows intercepting FTP connections where a user accesses an FTP server via a ftp:// URL in a web browser. An information disclosure vulnerability in the WebFTP mode allows a malicious user to obtain plaintext authentication credentials for a remote FTP server from the ASG/ProxySG's web listing of the FTP server. Affected versions: ASG 6.6 and 6.7 prior to 6.7.4.2; ProxySG 6.5 prior to 6.5.10.15, 6.6, and 6.7 prior to 6.7.4.2.
How severe is CVE-2018-18371?: CVE-2018-18371 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2018-18371 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-18371?: CVE-2018-18371 primarily affects Broadcom Advanced Secure Gateway. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-18371?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-18371 published?: CVE-2018-18371 was published on 2019-08-30 and last updated on 2026-06-17.

References

https://support.symantec.com/us/en/article.SYMSA1472.html

Affected products (4)

cpe:2.3:a:broadcom:advanced_secure_gateway:*:*:*:*:*:*:*:*
cpe:2.3:a:broadcom:advanced_secure_gateway:6.6:*:*:*:*:*:*:*
cpe:2.3:a:broadcom:symantec_proxysg:*:*:*:*:*:*:*:*
cpe:2.3:a:broadcom:symantec_proxysg:6.6:*:*:*:*:*:*:*

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