HOMEVULNERABILITIESCVE-2021-33178
MEDIUM

CVE-2021-33178

CWE-22Published: October 14, 2021· Updated: Jun 17, 2026

6.5
CVSS v3.1

Official Description

The Manage Backgrounds functionality within NagVis versions prior to 1.9.29 is vulnerable to an authenticated path traversal vulnerability. Exploitation of this results in a malicious actor having the ability to arbitrarily delete files on the local system.

NVD Source

Technical Analysis

CVE-2021-33178 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

Affected Vendors & Products

nagvis1 product(s)
nagvis
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://nagvis.org/downloads/changelog/1.9.29
ADVISORYhttps://www.synopsys.com/blogs/software-security/cyrc-advisory-nagios-xi
ADVISORYhttps://nagvis.org/downloads/changelog/1.9.29
ADVISORYhttps://www.synopsys.com/blogs/software-security/cyrc-advisory-nagios-xi

All References (5)

→
https://nagvis.org/downloads/changelog/1.9.29Release Notes · Vendor Advisory
→
https://www.synopsys.com/blogs/software-security/cyrc-advisory-nagios-xiThird Party Advisory
→
https://lists.debian.org/debian-lts-announce/2025/05/msg00000.html
→
https://nagvis.org/downloads/changelog/1.9.29Release Notes · Vendor Advisory
→
https://www.synopsys.com/blogs/software-security/cyrc-advisory-nagios-xiThird Party Advisory

Quick Facts

CVE IDCVE-2021-33178
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-22
CISA KEVNo
Affected1 vendor(s)
PublishedOct 14, 2021

Related CVEs (CWE-22)

CVE-2011-2653
10.0
CVE-2020-29495
10.0
CVE-2026-34909
KEV10.0
CVE-2011-5127
10.0
CVE-2019-18253
10.0
CVE-2015-0779
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-33178 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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