How severe is CVE-2024-33820?

CVE-2024-33820 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-33820 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-33820?

CVE-2024-33820 affects Totolink A3002r Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-33820?

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.

Does CVE-2024-33820 have an EU (EUVD) identifier?

Yes. CVE-2024-33820 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31529.

When was CVE-2024-33820 published?

CVE-2024-33820 was published on 2024-05-01 and last updated on 2026-06-17.

CVE-2024-33820

CVE-2024-33820 is a high-severity vulnerability in Totolink A3002r Firmware with a CVSS 3.x base score of 7.5. 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-120.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-31529
Weakness: CWE-120
Affected product: Totolink A3002r Firmware
Published: 2024-05-01
Last modified: 2026-06-17

Description

Totolink AC1200 Wireless Dual Band Gigabit Router A3002R_V4 Firmware V4.0.0-B20230531.1404 is vulnerable to Buffer Overflow via the formWlEncrypt function of the boa server. Specifically, they exploit the length of the wlan_ssid field triggers the overflow.

Frequently asked questions

What is CVE-2024-33820?: Totolink AC1200 Wireless Dual Band Gigabit Router A3002R_V4 Firmware V4.0.0-B20230531.1404 is vulnerable to Buffer Overflow via the formWlEncrypt function of the boa server. Specifically, they exploit the length of the wlan_ssid field triggers the overflow.
How severe is CVE-2024-33820?: CVE-2024-33820 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-33820 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-33820?: CVE-2024-33820 affects Totolink A3002r Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-33820?: 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.
Does CVE-2024-33820 have an EU (EUVD) identifier?: Yes. CVE-2024-33820 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31529.
When was CVE-2024-33820 published?: CVE-2024-33820 was published on 2024-05-01 and last updated on 2026-06-17.

References

https://gist.github.com/Swind1er/ee095fbfe13f77a5b45b39a5aa82bd17

Affected products (1)

cpe:2.3:o:totolink:a3002r_firmware:4.0.0-b20230531.1404:*:*:*:*:*:*:*

More vulnerabilities in Totolink A3002r Firmware

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CVE-2025-45858 — Critical (CVSS 9.8): TOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a command injection vulnerability via the FUN_00459fdc…
CVE-2025-25579 — Critical (CVSS 9.8): TOTOLINK A3002R V4.0.0-B20230531.1404 is vulnerable to Command Injection in /bin/boa via bandstr.

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