CVE-2026-24738

Application hang via unbounded TLV length

Published Jan 27, 2026 · Updated Jan 27, 2026

Uncontrolled resource consumption in gmrtd before 0.17.2 allows physically proximate attackers to hang applications via crafted NFC data. ReadFile trusts a BER-TLV long-form length of up to 4 GB, allocates memory from that value, and repeatedly requests small chunks without an effective bound. Exploitation requires an application to process data from a malicious or noncompliant NFC or APDU source, resulting in memory exhaustion, excessive CPU use, or a blocked goroutine without reported confidentiality or integrity impact.

CVSS severity5.9
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in gmrtd before 0.17.2 allows physically proximate attackers to hang applications via crafted NFC data. ReadFile trusts a BER-TLV long-form length of up to 4 GB, allocates memory from that value, and repeatedly requests small chunks without an effective bound. Exploitation requires an application to process data from a malicious or noncompliant NFC or APDU source, resulting in memory exhaustion, excessive CPU use, or a blocked goroutine without reported confidentiality or integrity impact.

The record

CVE
CVE-2026-24738
Published
Jan 27, 2026
Updated
Jan 27, 2026
Vendor
gmrtd
Product
gmrtd
Classifications
CWE-770, CWE-400, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 27, 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=< 0.17.2

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

gmrtd · gmrtdversion=< 0.17.2

Published CVSS scores

5.9GitHub, Inc.CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
6.5NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
CWE-400Uncontrolled Resource Consumption
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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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