How severe is CVE-2021-24161?

CVE-2021-24161 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-24161 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24161?

CVE-2021-24161 primarily affects Expresstech Responsive Menu. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-24161?

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-2021-24161 published?

CVE-2021-24161 was published on 2021-04-05 and last updated on 2026-06-17.

CVE-2021-24161

CVE-2021-24161 is a high-severity vulnerability in Expresstech Responsive Menu 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-352.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Expresstech Responsive Menu
Published: 2021-04-05
Last modified: 2026-06-17

Description

In the Reponsive Menu (free and Pro) WordPress plugins before 4.0.4, attackers could craft a request and trick an administrator into uploading a zip archive containing malicious PHP files. The attacker could then access those files to achieve remote code execution and further infect the targeted site.

Frequently asked questions

What is CVE-2021-24161?: In the Reponsive Menu (free and Pro) WordPress plugins before 4.0.4, attackers could craft a request and trick an administrator into uploading a zip archive containing malicious PHP files. The attacker could then access those files to achieve remote code execution and further infect the targeted site.
How severe is CVE-2021-24161?: CVE-2021-24161 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-24161 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24161?: CVE-2021-24161 primarily affects Expresstech Responsive Menu. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-24161?: 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-2021-24161 published?: CVE-2021-24161 was published on 2021-04-05 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:expresstech:responsive_menu:*:*:*:*:free:wordpress:*:*
cpe:2.3:a:expresstech:responsive_menu:*:*:*:*:pro:wordpress:*:*

More vulnerabilities in Expresstech Responsive Menu

CVE-2021-24162 — High (CVSS 8.8): In the Reponsive Menu (free and Pro) WordPress plugins before 4.0.4, attackers could craft a request and trick an…
CVE-2021-24160 — High (CVSS 8.8): In the Reponsive Menu (free and Pro) WordPress plugins before 4.0.4, subscribers could upload zip archives containing…
CVE-2017-18513 — High (CVSS 8.8): The responsive-menu plugin before 3.1.4 for WordPress has no CSRF protection mechanism for the admin interface.
CVE-2022-25602 — High (CVSS 8.3): Nonce token leak vulnerability leading to arbitrary file upload, theme deletion, plugin settings change discovered in…

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