How severe is CVE-2021-26752?

CVE-2021-26752 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-26752 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26752?

CVE-2021-26752 affects Nedi. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-26752?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-26752 published?

CVE-2021-26752 was published on 2021-02-12 and last updated on 2026-06-17.

CVE-2021-26752

CVE-2021-26752 is a high-severity vulnerability in Nedi with a CVSS 3.x base score of 8.8. 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-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Nedi
Published: 2021-02-12
Last modified: 2026-06-17

Description

NeDi 1.9C allows an authenticated user to execute operating system commands in the Nodes Traffic function on the endpoint /Nodes-Traffic.php via the md or ag HTTP GET parameter. This allows an attacker to obtain access to the operating system where NeDi is installed and to all application data.

Frequently asked questions

What is CVE-2021-26752?: NeDi 1.9C allows an authenticated user to execute operating system commands in the Nodes Traffic function on the endpoint /Nodes-Traffic.php via the md or ag HTTP GET parameter. This allows an attacker to obtain access to the operating system where NeDi is installed and to all application data.
How severe is CVE-2021-26752?: CVE-2021-26752 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-26752 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26752?: CVE-2021-26752 affects Nedi. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-26752?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-26752 published?: CVE-2021-26752 was published on 2021-02-12 and last updated on 2026-06-17.

References

https://n4nj0.github.io/advisories/nedi-multiple-vulnerabilities-i/

Affected products (1)

cpe:2.3:a:nedi:nedi:1.9c:*:*:*:*:*:*:*

More vulnerabilities in Nedi

CVE-2021-26753 — Critical (CVSS 9.9): NeDi 1.9C allows an authenticated user to inject PHP code in the System Files function on the endpoint…
CVE-2022-40895 — Critical (CVSS 9.1): In certain Nedi products, a vulnerability in the web UI of NeDi login & Community login could allow an unauthenticated,…
CVE-2021-26751 — High (CVSS 8.8): NeDi 1.9C allows an authenticated user to perform a SQL Injection in the Monitoring History function on the endpoint…
CVE-2020-14414 — High (CVSS 8.8): NeDi 1.9C is vulnerable to Remote Command Execution. pwsec.php improperly escapes shell metacharacters from a POST…
CVE-2020-14412 — High (CVSS 8.8): NeDi 1.9C is vulnerable to Remote Command Execution. System-Snapshot.php improperly escapes shell metacharacters from a…
CVE-2018-20728 — High (CVSS 8.8): A cross site request forgery (CSRF) vulnerability in NeDi before 1.7Cp3 allows remote attackers to escalate privileges…

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