CVE-2026-19201Public exploitNetwork attack vector

Verifier crash via unbounded ELAM recursion

Published Sep 8, 2026 · Updated Sep 10, 2026

Uncontrolled recursion in Google Go-Attestation 0.6.1 and earlier allows remote attackers to crash verifier applications with crafted logs. The (*WinEvents).readELAMAggregation function recursively parses each nested elamAggregation sub-event without a depth limit, while recursive paths bypass the size guard. A network-reachable verifier must parse a malicious Windows TPM event log; stack exhaustion then terminates the entire process with an unrecoverable runtime error.

CVSS severityUnavailable
Unscored
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled recursion in Google Go-Attestation 0.6.1 and earlier allows remote attackers to crash verifier applications with crafted logs. The (*WinEvents).readELAMAggregation function recursively parses each nested elamAggregation sub-event without a depth limit, while recursive paths bypass the size guard. A network-reachable verifier must parse a malicious Windows TPM event log; stack exhaustion then terminates the entire process with an unrecoverable runtime error.

The record

CVE
CVE-2026-19201
Published
Sep 8, 2026
Updated
Sep 10, 2026
Vendor
Google Cloud
Product
Go-Attestation
Classifications
CWE-674, CAPEC-130, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.0.0 <=0.6.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Go-Attestationversion=0.0.0 <=0.6.1

Published CVSS scores

6.6Google CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-674Uncontrolled Recursion
CAPEC-130Excessive Allocation
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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