How severe is CVE-2021-26596?

CVE-2021-26596 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-26596 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26596?

CVE-2021-26596 affects Nokia Netact. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-26596?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-26596 published?

CVE-2021-26596 was published on 2021-03-25 and last updated on 2026-06-17.

CVE-2021-26596

CVE-2021-26596 is a medium-severity vulnerability in Nokia Netact with a CVSS 3.x base score of 5.4. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Nokia Netact
Published: 2021-03-25
Last modified: 2026-06-17

Description

An issue was discovered in Nokia NetAct 18A. A malicious user can change a filename of an uploaded file to include JavaScript code, which is then stored and executed by a victim's web browser. The most common mechanism for delivering malicious content is to include it as a parameter in a URL that is posted publicly or e-mailed directly to victims. Here, the /netact/sct filename parameter is used.

Frequently asked questions

What is CVE-2021-26596?: An issue was discovered in Nokia NetAct 18A. A malicious user can change a filename of an uploaded file to include JavaScript code, which is then stored and executed by a victim's web browser. The most common mechanism for delivering malicious content is to include it as a parameter in a URL that is posted publicly or e-mailed directly to victims. Here, the /netact/sct filename parameter is used.
How severe is CVE-2021-26596?: CVE-2021-26596 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-26596 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26596?: CVE-2021-26596 affects Nokia Netact. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-26596?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-26596 published?: CVE-2021-26596 was published on 2021-03-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nokia:netact:18a:*:*:*:*:*:*:*

More vulnerabilities in Nokia Netact

CVE-2022-30280 — High (CVSS 8.8): /SecurityManagement/html/createuser.jsf in Nokia NetAct 22 allows CSRF. A remote attacker is able to create users with…
CVE-2022-28864 — High (CVSS 8.8): An issue was discovered in Nokia NetAct 22 through the Administration of Measurements website section. A malicious user…
CVE-2022-28863 — High (CVSS 8.8): An issue was discovered in Nokia NetAct 22. A remote user, authenticated to the website, can visit the Site…
CVE-2023-26059 — Medium (CVSS 6.8): An issue was discovered in Nokia NetAct before 22 SP1037. On the Site Configuration Tool tab, attackers can upload a…
CVE-2023-26061 — Medium (CVSS 6.8): An issue was discovered in Nokia NetAct before 22 FP2211. On the Scheduled Search tab under the Alarm Reports Dashboard…
CVE-2023-26060 — Medium (CVSS 6.8): An issue was discovered in Nokia NetAct before 22 FP2211. On the Working Set Manager page, users can create a Working…

All CVEs affecting Nokia Netact →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →