CVE-2026-53705Network attack vector

Code execution via overflowed WavPack buffer allocation

Published Jun 15, 2026 · Updated Jun 15, 2026

Heap buffer overflow in Red Hat Enterprise Linux 7 through 10 allows remote attackers to corrupt memory through a crafted WavPack file. gst_wavpack_dec_handle_frame() multiplies block samples and channels in 32-bit arithmetic, passes the wrapped size to g_malloc(), and lets WavPack write decoded samples beyond the undersized heap buffer. A user must open the uncommon audio format; processing can crash the application or execute code in its context.

CVSS severity7.6
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in Red Hat Enterprise Linux 7 through 10 allows remote attackers to corrupt memory through a crafted WavPack file. gst_wavpack_dec_handle_frame() multiplies block samples and channels in 32-bit arithmetic, passes the wrapped size to g_malloc(), and lets WavPack write decoded samples beyond the undersized heap buffer. A user must open the uncommon audio format; processing can crash the application or execute code in its context.

The record

CVE
CVE-2026-53705
Published
Jun 15, 2026
Updated
Jun 15, 2026
Vendor
389 Directory Server
Product
Red Hat Enterprise Linux 10
Classifications
CWE-190, T1204.002, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 15, 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 versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

389 Directory Server · Red Hat Enterprise Linux 10Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 7Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.

Published CVSS scores

7.6Red HatCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1204.002User Execution: Malicious File
T1203Exploitation for Client Execution

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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