CVE-2026-38641Public exploitNetwork attack vector

Service interruption via crafted shared library loading

Published Jun 26, 2026 · Updated Jun 26, 2026

Denial of service in relibc commit 61f42d allows remote attackers to interrupt service by loading a crafted shared library. The public record identifies DSO::mmap_and_copy as the failing locus but does not disclose the erroneous mapping or copy operation. The crafted object must reach the dynamic loader; the documented consequence is availability loss, with no data access or modification.

CVSS severity7.5
High
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in relibc commit 61f42d allows remote attackers to interrupt service by loading a crafted shared library. The public record identifies DSO::mmap_and_copy as the failing locus but does not disclose the erroneous mapping or copy operation. The crafted object must reach the dynamic loader; the documented consequence is availability loss, with no data access or modification.

The record

CVE
CVE-2026-38641
Published
Jun 26, 2026
Updated
Jun 26, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-404, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 26, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8TenableAV:N/AC:L/Au:N/C:N/I:N/A:C
7.5CISA-ADPCVSS:3.1/AV:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
T1499.004Application 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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