CVE-2014-2896Network attack vector

Memory corruption via incorrect DoAlert length check

Published Jan 28, 2020 · Updated Aug 6, 2024

Improper alert length validation in wolfSSL CyaSSL before 2.9.4 allows remote attackers to trigger memory corruption or an out-of-bounds read. The DoAlert function applies an incorrect length check while processing an incoming TLS or DTLS alert, permitting access beyond the supplied message buffer. No authentication or user interaction is required, but published sources do not specify the crafted alert fields or whether the outcome is a crash or data exposure.

CVSS severity9.8
Critical
EPSS probability2.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper alert length validation in wolfSSL CyaSSL before 2.9.4 allows remote attackers to trigger memory corruption or an out-of-bounds read. The DoAlert function applies an incorrect length check while processing an incoming TLS or DTLS alert, permitting access beyond the supplied message buffer. No authentication or user interaction is required, but published sources do not specify the crafted alert fields or whether the outcome is a crash or data exposure.

The record

CVE
CVE-2014-2896
Published
Jan 28, 2020
Updated
Aug 6, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 28, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record 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

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

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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