How severe is CVE-2020-35576?

CVE-2020-35576 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-35576 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 42% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35576?

CVE-2020-35576 affects Tp-link Tl-wr841n Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-35576?

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-2020-35576 published?

CVE-2020-35576 was published on 2021-01-26 and last updated on 2026-06-17.

CVE-2020-35576

CVE-2020-35576 is a high-severity vulnerability in Tp-link Tl-wr841n Firmware with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 42% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 42% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Tp-link Tl-wr841n Firmware
Published: 2021-01-26
Last modified: 2026-06-17

Description

A Command Injection issue in the traceroute feature on TP-Link TL-WR841N V13 (JP) with firmware versions prior to 201216 allows authenticated users to execute arbitrary code as root via shell metacharacters, a different vulnerability than CVE-2018-12577.

Frequently asked questions

What is CVE-2020-35576?: A Command Injection issue in the traceroute feature on TP-Link TL-WR841N V13 (JP) with firmware versions prior to 201216 allows authenticated users to execute arbitrary code as root via shell metacharacters, a different vulnerability than CVE-2018-12577.
How severe is CVE-2020-35576?: CVE-2020-35576 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-35576 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 42% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35576?: CVE-2020-35576 affects Tp-link Tl-wr841n Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35576?: 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-2020-35576 published?: CVE-2020-35576 was published on 2021-01-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tp-link:tl-wr841n_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Tp-link Tl-wr841n Firmware

CVE-2022-25073 — Critical (CVSS 9.8): TL-WR841Nv14_US_0.9.1_4.18 routers were discovered to contain a stack overflow in the function dm_fillObjByStr(). This…
CVE-2018-12575 — Critical (CVSS 9.8): On TP-Link TL-WR841N v13 00000001 0.9.1 4.16 v0001.0 Build 171019 Rel.55346n devices, all actions in the web interface…
CVE-2018-11714 — Critical (CVSS 9.8): An issue was discovered on TP-Link TL-WR840N v5 00000005 0.9.1 3.16 v0001.0 Build 170608 Rel.58696n and TL-WR841N v13…
CVE-2026-5039 — High (CVSS 8.8): TP-Link TL-WR841N v13 uses DES-CBC encryption in the TDDPv2 debug protocol with a cryptographic key derived from…
CVE-2023-39471 — High (CVSS 8.8): TP-Link TL-WR841N ated_tp Command Injection Remote Code Execution Vulnerability. This vulnerability allows…
CVE-2023-36489 — High (CVSS 8.8): Multiple TP-LINK products allow a network-adjacent unauthenticated attacker to execute arbitrary OS commands. Affected…

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