CVE-2026-50086: The Aqara IAM/SSO gateway (gw-builder.aqara.com) exposes bidirectional AES round-trups against the platform's

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CRITICAL 10.0REMOTEDOWNGRADE

CVE-2026-50086 is a critical-severity flaw (CVSS 10.0) affecting iam\/sso gateway. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Aqara IAM/SSO gateway (gw-builder.aqara.com) exposes bidirectional AES round-trups against the platform's signing key without authentication. This is an instance of "CWE-306: Missing Authentication for Critical Function" and "CWE-327: Use of a Broken or Risky Cryptographic Algorithm," and has an estimated CVSS of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N (7.5 High).

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	10.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-327
Published	2026-06-12
Last modified	2026-10-26

Publisher (CNA): runZero · Vendor: aqara

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-12 16:16 UTCPublished CVE record published
2026-10-26 11:10 UTCUpdated Record last modified

aqara iam\/sso gateway DOWNGRADE

Affected: 2026-04-20

Fixed in: no fixed release known

Safe to downgrade to: a release before 2026-04-20

1. Check installed version

apt-cache policy iamsso-gateway || rpm -q iamsso-gateway || iamsso-gateway --version

2. No fixed release: DOWNGRADE to a release before 2026-04-20 (Debian / Ubuntu)

apt-cache madison iamsso-gateway sudo apt install iamsso-gateway=<VERSION_BEFORE_2026-04-20> sudo apt-mark hold iamsso-gateway

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list iamsso-gateway sudo dnf downgrade iamsso-gateway-<VERSION_BEFORE_2026-04-20> sudo dnf versionlock add iamsso-gateway

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2026-50086?

iam\/sso gateway: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-50086 being exploited?

CVE-2026-50086 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-2026-50086 affect?

CVE-2026-50086 affects iam\/sso gateway. Severity is critical (CVSS 10.0). The Aqara IAM/SSO gateway (gw-builder.aqara.com) exposes bidirectional AES round-trups against the platform's signing key without authentication. This is an instance of "CWE-306: Missing Authentication for Critical Function" and "CWE-327: U

How urgent is CVE-2026-50086?

Priority 50/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-50083 CRITICAL 9.1 DOWNGRADE The Aqara IAM/SSO Gateway (gw-builder.aqara.com) used a hardcoded OAuth client credential, which is an instanc
CVE-2026-50087 HIGH 8.2 DOWNGRADE The Aqara IAM/SSO gateway (gw-builder.aqara.com) exhibits a cross-origin request sharing vulnerability, which
CVE-2026-50089 MEDIUM 6.1 DOWNGRADE The Aqara IAM/SSO Gateway (gw-builder.aqara.com) provides an open redirect, which is an instance of "CWE-601:

References

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