CVE-2025-49825: Teleport allows remote authentication bypass

Should you act?

Critical and remotely reachable

No known exploitation yet, but it is network-reachable without credentials. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

• No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
• EPSS 7.9%, percentile 95: FIRST’s model estimates a 7.9% chance of exploitation activity in the next 30 days, higher than 95% of all scored CVEs (elevated). EPSS is a probability, not a verdict.
• Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
• Only applies if your dependency tree includes github.com/gravitational/teleport (Go) >= 17.0.0, < 17.5.2, fixed in 17.5.2; github.com/gravitational/teleport (Go) >= 16.0.0, < 16.5.12, fixed in 16.5.12; github.com/gravitational/teleport (Go) >= 15.0.0, < 15.5.3, fixed in 15.5.3; github.com/gravitational/teleport (Go) >= 14.0.0, < 14.4.1, fixed in 14.4.1. Check your lockfile, including transitive dependencies.

What it is

Teleport provides connectivity, authentication, access controls and audit for infrastructure. Community Edition versions before and including 17.5.1 are vulnerable to remote authentication bypass. At time of posting, there is no available open-source patch.

From the GitHub advisory

Impact

A full technical disclosure and open-source patch will be published after the embargo period, ending on June 30th, to allow all users to upgrade.

Teleport security engineers identified a critical security vulnerability that could allow remote authentication bypass of Teleport.

Teleport Cloud Infrastructure and CI/CD build, test, and release infrastructure aren’t affected.

For the full mitigation, upgrade both Proxy and Teleport agents. It is strongly recommend updating clients to the released patch versions as a precaution.

Weakness type: CWE-863.

Product: github.com/gravitational/teleport (Go) · Assigned by: GitHub_M · Published: 2025-06-17

Affected and fixed versions

Severity scores

• Attack vector: network (remotely reachable)
• Attack complexity: low
• Privileges required: none (no login)
• User interaction: none
• Scope: unchanged

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

• CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
• CISA SSVC assessment: exploitation none, automatable yes, technical impact total.
• FIRST EPSS (model of 2026-10-21): 7.92% probability of exploitation activity in the next 30 days; percentile 95.

Timeline

• 2025-06-16 — GitHub-reviewed advisory GHSA-8cqv-pj7f-pwpc published (critical)
• 2025-06-17 — CVE record published by GitHub_M
• 2025-06-18 — CVE record last updated

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Vulnerability records

1. GitHub Advisory GHSA-8cqv-pj7f-pwpc github.com
2. CVE.org record CVE-2025-49825 cve.org
3. NVD entry CVE-2025-49825 nvd.nist.gov

Other references from the CVE record and advisory

1. github.com github.com

Critical Go advisories · Today’s Security Digest