How severe is CVE-2021-3159?

CVE-2021-3159 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-2021-3159 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3159?

CVE-2021-3159 affects Landray Landray Ekp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-3159?

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

When was CVE-2021-3159 published?

CVE-2021-3159 was published on 2021-07-23 and last updated on 2026-06-17.

CVE-2021-3159

CVE-2021-3159 is a medium-severity vulnerability in Landray Landray Ekp 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% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Landray Landray Ekp
Published: 2021-07-23
Last modified: 2026-06-17

Description

A stored cross site scripting (XSS) vulnerability in the /sys/attachment/uploaderServlet component of Landray EKP V12.0.9.R.20160325 allows attackers to execute arbitrary web scripts or HTML via a crafted SVG, SHTML, or MHT file.

Frequently asked questions

What is CVE-2021-3159?: A stored cross site scripting (XSS) vulnerability in the /sys/attachment/uploaderServlet component of Landray EKP V12.0.9.R.20160325 allows attackers to execute arbitrary web scripts or HTML via a crafted SVG, SHTML, or MHT file.
How severe is CVE-2021-3159?: CVE-2021-3159 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-2021-3159 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3159?: CVE-2021-3159 affects Landray Landray Ekp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-3159?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-3159 published?: CVE-2021-3159 was published on 2021-07-23 and last updated on 2026-06-17.

References

https://github.com/fa1c0n1/m01e-wiki/blob/main/my-vulns/landray-ekp.md

Affected products (1)

cpe:2.3:a:landray:landray_ekp:12.0.9.r.20160325:*:*:*:*:*:*:*

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