CVE-2025-14876

Host process crash via unbounded AKCIPHER allocation

Published Feb 18, 2026 · Updated Feb 18, 2026

Resource exhaustion in QEMU 7.1.0 through 10.2.0 allows guest OS users to crash the host QEMU process via an AKCIPHER request. virtio_crypto_handle_asym_req reads guest-controlled src_data_len and dst_data_len values and allocates both buffers without checking their sum against conf.max_size. A guest must have access to virtio-crypto; oversized asymmetric-crypto requests can exhaust host memory and abort only the associated QEMU process.

CVSS severity5.5
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in QEMU 7.1.0 through 10.2.0 allows guest OS users to crash the host QEMU process via an AKCIPHER request. virtio_crypto_handle_asym_req reads guest-controlled src_data_len and dst_data_len values and allocates both buffers without checking their sum against conf.max_size. A guest must have access to virtio-crypto; oversized asymmetric-crypto requests can exhaust host memory and abort only the associated QEMU process.

The record

CVE
CVE-2025-14876
Published
Feb 18, 2026
Updated
Feb 18, 2026
Vendor
QEMU Project
Product
QEMU
Classifications
CWE-770, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 18, 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?

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  1. Affected versionversion=7.1.0 <=10.2.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

QEMU Project · QEMUversion=7.1.0 <=10.2.0

Published CVSS scores

5.5Fedora ProjectCVSS:3.1/AV:L/AC:L/PR:L/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.

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No observations available

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

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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