CVE-2026-1871: TP-Link Tapo C200 v5 contains a stack-based buffer overflow flaw in RTSP authentication handling due to improp

Routine

MEDIUM 6.5MITIGATE

CVE-2026-1871 is a medium-severity flaw (CVSS 6.5) affecting tapo c200 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 camer

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 77%)
CISA exploited list	No
Weakness	CWE-121
Published	2026-06-02
Last modified	2026-07-22

Publisher (CNA): TPLink · Vendor: tp-link

Last updated 2026-07-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-02 17:16 UTCPublished CVE record published
2026-07-22 19:10 UTCUpdated Record last modified

tp-link tapo c200 firmware MITIGATE

Affected: 1.0.5 build_240327 · 1.0.12 build_240527 · 1.0.13 build_240619 · 1.0.17 build_240806 · 1.1.4 build_241219 · 1.1.8 build_250310 · 1.2.3 build_250610 · 1.3.1 build_250910

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.5

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-1871?

tapo c200 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-1871 being exploited?

CVE-2026-1871 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-1871 affect?

CVE-2026-1871 affects tapo c200 firmware. Severity is medium (CVSS 6.5). 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 explo

How urgent is CVE-2026-1871?

Priority 29/100. No elevated risk signals yet.

Software pages

TP-Link vulnerabilities

Related CVEs

CVE-2026-12760 MEDIUM 6.5 MITIGATE A denial-of-service (DoS) vulnerability has been identified in Tapo C200 v3 in the network packet handling log
CVE-2026-15316 MEDIUM 6.5 UPGRADE An improper input validation vulnerability in the configuration service for processing encrypted credential da

References

← Back to latest CVEs