CVE-2021-33178
CVE-2021-33178 is a medium-severity vulnerability in Nagvis 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-22.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v2: 8.5
- EPSS exploit prediction: 2% (79th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-22
- Affected product: Nagvis
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2021-33178?
- 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.
- How severe is CVE-2021-33178?
- CVE-2021-33178 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
- Is CVE-2021-33178 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-33178?
- CVE-2021-33178 affects Nagvis. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-33178?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-33178 published?
- CVE-2021-33178 was published on 2021-10-14 and last updated on 2026-06-17.
References
- https://nagvis.org/downloads/changelog/1.9.29
- https://www.synopsys.com/blogs/software-security/cyrc-advisory-nagios-xi
- https://lists.debian.org/debian-lts-announce/2025/05/msg00000.html
Affected products (1)
- cpe:2.3:a:nagvis:nagvis:*:*:*:*:*:nagios_xi:*:*
More vulnerabilities in Nagvis
- CVE-2022-46945 — Critical (CVSS 9.1): Nagvis before 1.9.34 was discovered to contain an arbitrary file read vulnerability via the component…
- CVE-2024-47093 — High (CVSS 8.8): Improper neutralization of input in Nagvis before version 1.9.42 which can lead to XSS
- CVE-2024-38866 — High (CVSS 7.5): Improper neutralization of input in Nagvis before version 1.9.47 which can lead to livestatus injection
- CVE-2024-47090 — Medium (CVSS 6.1): Improper neutralization of input in Nagvis before version 1.9.47 which can lead to XSS
- CVE-2023-46287 — Medium (CVSS 6.1): XSS exists in NagVis before 1.9.38 via the select function in share/server/core/functions/html.php.
- CVE-2017-6393 — Medium (CVSS 6.1): An issue was discovered in NagVis 1.9b12. The vulnerability exists due to insufficient filtration of user-supplied data…
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- CVE-2026-59555 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Deletion in Participants Database <= 2.7.8.3 versions.