How severe is CVE-2026-1871?

CVE-2026-1871 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 none, integrity none, and availability high.

Is CVE-2026-1871 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-1871?

CVE-2026-1871 primarily affects Tp-link Tapo C200 Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-1871?

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

Does CVE-2026-1871 have an EU (EUVD) identifier?

Yes. CVE-2026-1871 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33978.

When was CVE-2026-1871 published?

CVE-2026-1871 was published on 2026-06-02 and last updated on 2026-06-17.

CVE-2026-1871

CVE-2026-1871 is a medium-severity vulnerability in Tp-link Tapo C200 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-121.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 7.1
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-33978
Weakness: CWE-121
Affected product: Tp-link Tapo C200 Firmware
Published: 2026-06-02
Last modified: 2026-06-17

Description

TP-Link Tapo C200 v5 contains a stack-based buffer overflow flaw in RTSP authentication handling due to improper validation of Authorization header field lengths, which can be triggered by a crafted authentication request. Successful exploitation causes the affected RTSP core service process to crash and triggers an automatic system reboot, resulting in a denial of service (DoS) condition. This prevents legitimate users from accessing the camera’s live video stream or management interface until the service restarts.

Frequently asked questions

What is CVE-2026-1871?: TP-Link Tapo C200 v5 contains a stack-based buffer overflow flaw in RTSP authentication handling due to improper validation of Authorization header field lengths, which can be triggered by a crafted authentication request. Successful exploitation causes the affected RTSP core service process to crash and triggers an automatic system reboot, resulting in a denial of service (DoS) condition. This prevents legitimate users from accessing the camera’s live video stream or management interface until the service restarts.
How severe is CVE-2026-1871?: CVE-2026-1871 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 none, integrity none, and availability high.
Is CVE-2026-1871 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-1871?: CVE-2026-1871 primarily affects Tp-link Tapo C200 Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-1871?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-1871 have an EU (EUVD) identifier?: Yes. CVE-2026-1871 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33978.
When was CVE-2026-1871 published?: CVE-2026-1871 was published on 2026-06-02 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:o:tp-link:tapo_c200_firmware:1.0.5:build_240327:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.0.12:build_240527:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.0.13:build_240619:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.0.17:build_240806:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.1.4:build_241219:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.1.8:build_250310:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.2.3:build_250610:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.1:build_250910:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.3:build_251119:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.5:build_260228:*:*:*:*:*:*

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