How severe is CVE-2026-0834?

CVE-2026-0834 has a CVSS 3.x base score of 8.8, rated high 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 high, and availability high.

Is CVE-2026-0834 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-0834?

CVE-2026-0834 primarily affects Tp-link Archer Ax53 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-0834?

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-2026-0834 have an EU (EUVD) identifier?

Yes. CVE-2026-0834 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3601.

When was CVE-2026-0834 published?

CVE-2026-0834 was published on 2026-01-21 and last updated on 2026-06-17.

CVE-2026-0834

CVE-2026-0834 is a high-severity vulnerability in Tp-link Archer Ax53 Firmware 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-290.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 7.2
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3601
Weakness: CWE-290
Affected product: Tp-link Archer Ax53 Firmware
Published: 2026-01-21
Last modified: 2026-06-17

Description

Logic vulnerability in TP-Link Archer C20 v5, 6.0, Archer AX53 v1.0 and TL-WR841N v13 (TDDP module) allows unauthenticated adjacent attackers to execute administrative commands including factory reset and device reboot without credentials. Attackers on the adjacent network can remotely trigger factory resets and reboots without credentials, causing configuration loss and interruption of device availability. This issue affects Archer C20 v6.0 < V6_251031, Archer C20 v5 <EU_V5_260317 or < US_V5_260419 Archer AX53 v1.0 < V1_251215 TL-WR841N v13 < 0.9.1 Build 20231120 Rel.62366

Frequently asked questions

What is CVE-2026-0834?: Logic vulnerability in TP-Link Archer C20 v5, 6.0, Archer AX53 v1.0 and TL-WR841N v13 (TDDP module) allows unauthenticated adjacent attackers to execute administrative commands including factory reset and device reboot without credentials. Attackers on the adjacent network can remotely trigger factory resets and reboots without credentials, causing configuration loss and interruption of device availability. This issue affects Archer C20 v6.0 < V6_251031, Archer C20 v5 <EU_V5_260317 or < US_V5_260419 Archer AX53 v1.0 < V1_251215 TL-WR841N v13 < 0.9.1 Build 20231120 Rel.62366
How severe is CVE-2026-0834?: CVE-2026-0834 has a CVSS 3.x base score of 8.8, rated high 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 high, and availability high.
Is CVE-2026-0834 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-0834?: CVE-2026-0834 primarily affects Tp-link Archer Ax53 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-0834?: 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-2026-0834 have an EU (EUVD) identifier?: Yes. CVE-2026-0834 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3601.
When was CVE-2026-0834 published?: CVE-2026-0834 was published on 2026-01-21 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:tp-link:archer_ax53_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:archer_c20_firmware:6.0:*:*:*:*:*:*:*

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