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CVE-2018-18371· NVD / CVE Program· CNA symantec

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 brow

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.

MediumCVSS 6.5 · v3.0—No exploit No fix recorded
Published
Aug 30, 2019
Updated
Jun 16, 2026
EPSS
0.6% · 46th percentile
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Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.6%

Noroxi analysis

No Noroxi analysis for this record yet

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Affected systems

VendorProduct
broadcomadvanced secure gateway
broadcomsymantec proxysg

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • broadcom advanced secure gateway6.7 and later · before 6.7.4.2
  • broadcom advanced secure gateway6.6
  • broadcom symantec proxysg6.5 and later · before 6.5.10.15
  • broadcom symantec proxysg6.7 and later · before 6.7.4.2
  • broadcom symantec proxysg6.6

Versions reported by the vendor

Affected version ranges reported by the assigning authority (symantec). Independent of NVD's CPE analysis and usually ahead of it.

  • Symantec Corporation Symantec Advanced Secure Gateway (ASG)

    • 6.6 and 6.7 prior to 6.7.4.2affected

  • Symantec Corporation Symantec ProxySG

    • 6.5 prior to 6.5.10.15, 6.6, 6.7 prior to 6.7.4.2affected

Same product

broadcom: all records

Other highest-scoring records for the same primary product.

  • CVE-2018-5241Symantec Advanced Secure Gateway (ASG) 6.6 and 6.7, and ProxySG 6.5, 6.6, and 6.7 are susceptible to a SAML authentication bypass vulnerabil
    40Plan
  • CVE-2023-23952Advanced Secure Gateway and Content Analysis, prior to 7.3.13.1 / 3.1.6.0, may be susceptible to a Command Injection vulnerability.
    39Monitor
  • CVE-2021-46825Symantec Advanced Secure Gateway (ASG) and ProxySG are susceptible to an HTTP desync vulnerability.
    36Monitor
  • CVE-2023-23955Advanced Secure Gateway and Content Analysis, prior to 7.3.13.1 / 3.1.6.0, may be susceptible to a Server-Side Request Forgery vulnerability
    32Monitor
  • CVE-2017-13677Denial-of-service (DoS) vulnerability in the Symantec Advanced Secure Gateway (ASG) and ProxySG management consoles.
    32Monitor
  • CVE-2023-23953Advanced Secure Gateway and Content Analysis, prior to 7.3.13.1 / 3.1.6.0, may be susceptible to an Elevation of Privilege vulnerability.
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-327 · Use of a Broken or Risky Cryptographic Algorithm

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records