How severe is CVE-2022-43635?

CVE-2022-43635 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2022-43635 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-43635?

CVE-2022-43635 affects Tp-link Tl-wr940n Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-43635?

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

When was CVE-2022-43635 published?

CVE-2022-43635 was published on 2023-03-29 and last updated on 2026-06-17.

CVE-2022-43635

CVE-2022-43635 is a medium-severity vulnerability in Tp-link Tl-wr940n Firmware with a CVSS 3.x base score of 6.5. 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-303.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-303
Affected product: Tp-link Tl-wr940n Firmware
Published: 2023-03-29
Last modified: 2026-06-17

Description

This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of TP-Link TL-WR940N 6_211111 3.20.1(US) routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the httpd service, which listens on TCP port 80 by default. The issue results from the incorrect implementation of the authentication algorithm. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise. Was ZDI-CAN-17332.

Frequently asked questions

What is CVE-2022-43635?: This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of TP-Link TL-WR940N 6_211111 3.20.1(US) routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the httpd service, which listens on TCP port 80 by default. The issue results from the incorrect implementation of the authentication algorithm. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise. Was ZDI-CAN-17332.
How severe is CVE-2022-43635?: CVE-2022-43635 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2022-43635 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-43635?: CVE-2022-43635 affects Tp-link Tl-wr940n Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-43635?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-43635 published?: CVE-2022-43635 was published on 2023-03-29 and last updated on 2026-06-17.

References

https://www.zerodayinitiative.com/advisories/ZDI-22-1615/

Affected products (1)

cpe:2.3:o:tp-link:tl-wr940n_firmware:6_211111_3.20.1:*:*:*:*:*:*:*

More vulnerabilities in Tp-link Tl-wr940n Firmware

CVE-2023-36355 — Critical (CVSS 9.9): TP-Link TL-WR940N V4 was discovered to contain a buffer overflow via the ipStart parameter at…
CVE-2023-33538 — High (CVSS 8.8): TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain a command injection…
CVE-2022-43636 — High (CVSS 8.8): This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of TP-Link…
CVE-2022-24355 — High (CVSS 8.8): This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link…
CVE-2019-6989 — High (CVSS 8.8): TP-Link TL-WR940N is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the…
CVE-2025-6151 — High (CVSS 8.2): A vulnerability has been found in TP-Link TL-WR940N V4 and TL-WR841N V11. Affected by this issue is some unknown…

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