CVE-2017-17933: cgi/surgeftpmgr.cgi (aka the Web Manager interface on TCP port 7021 or 9021) in NetWin SurgeFTP version 23f2 h

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MEDIUM 6.1DOWNGRADE

CVE-2017-17933 is a medium-severity flaw (CVSS 6.1) affecting surgeftp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

cgi/surgeftpmgr.cgi (aka the Web Manager interface on TCP port 7021 or 9021) in NetWin SurgeFTP version 23f2 has XSS via the classid, domainid, or username parameter.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.9% (top 39%)
CISA exploited list	No
Weakness	CWE-79
Published	2017-12-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: netwin

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-12-29 18:29 UTCPublished CVE record published
2026-06-17 01:11 UTCUpdated Record last modified

netwin surgeftp DOWNGRADE

Affected: 23f2

Fixed in: no fixed release known

Safe to downgrade to: a release before 23f2

1. Check installed version

apt-cache policy surgeftp || rpm -q surgeftp || surgeftp --version

2. No fixed release: DOWNGRADE to a release before 23f2 (Debian / Ubuntu)

apt-cache madison surgeftp sudo apt install surgeftp=<VERSION_BEFORE_23f2> sudo apt-mark hold surgeftp

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list surgeftp sudo dnf downgrade surgeftp-<VERSION_BEFORE_23f2> sudo dnf versionlock add surgeftp

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-17933?

surgeftp: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-17933 being exploited?

CVE-2017-17933 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-17933 affect?

CVE-2017-17933 affects surgeftp. Severity is medium (CVSS 6.1). cgi/surgeftpmgr.cgi (aka the Web Manager interface on TCP port 7021 or 9021) in NetWin SurgeFTP version 23f2 has XSS via the classid, domainid, or username parameter.

How urgent is CVE-2017-17933?

Priority 42/100. Public exploit reference

References

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