CVE-2017-20186: UNSUPPORTED WHEN ASSIGNED A vulnerability was found in nikooo777 ckSurf up to 1.19.2

Q: How do I fix CVE-2017-20186?

cksurf: upgrade to 1.21.0. Exact commands for each OS are on this page.

Q: Is CVE-2017-20186 being exploited?

CVE-2017-20186 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2017-20186 affect?

CVE-2017-20186 affects cksurf. Severity is low (CVSS 3.5). ** UNSUPPORTED WHEN ASSIGNED ** A vulnerability was found in nikooo777 ckSurf up to 1.19.2. It has been declared as problematic. This vulnerability affects the function SpecListMenuDead of the file csgo/addons/sourcemod/scripting/ckSurf/mis

Q: How urgent is CVE-2017-20186?

Priority 27/100. No elevated risk signals yet.

Routine

LOW 3.5UPGRADE

CVE-2017-20186 is a low-severity flaw (CVSS 3.5) affecting cksurf. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

** UNSUPPORTED WHEN ASSIGNED ** A vulnerability was found in nikooo777 ckSurf up to 1.19.2. It has been declared as problematic. This vulnerability affects the function SpecListMenuDead of the file csgo/addons/sourcemod/scripting/ckSurf/misc.sp of the component Spectator List Name Handler. The manipulation of the argument cleanName leads to denial of service. Upgrading to version 1.21.0 is able to address this issue. The name of the patch is fd63

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	3.5 (Low)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.9% (top 42%)
CISA exploited list	No
Weakness	CWE-404
Published	2023-08-28
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: nikooo777

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

Am I affected?

Timeline

2023-08-28 13:15 UTCPublished CVE record published
2026-06-17 01:15 UTCUpdated Record last modified

nikooo777 cksurf UPGRADE

Affected: < 1.21.0

Fixed in: 1.21.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.21.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade cksurf

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cksurf

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2017-20186?