CVE-2021-3007Known exploitationPublic exploitNetwork attack vector

Code execution via destructor-triggered object coercion

Published Jan 4, 2021 · Updated Aug 3, 2024

Deserialization in Laminas Project laminas-http before 2.14.2 and Zend Framework 3.0.0 allows attackers to execute arbitrary code. Stream::__destruct passes an attacker-controlled streamName object to unlink(), implicitly invoking its __toString() method and a gadget chain. Exploitation requires an application to unserialize attacker-supplied data with the affected classes available; successful attacks run code in the PHP process context.

CVSS severity9.8
Critical
EPSS probability75.31%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in Laminas Project laminas-http before 2.14.2 and Zend Framework 3.0.0 allows attackers to execute arbitrary code. Stream::__destruct passes an attacker-controlled streamName object to unlink(), implicitly invoking its __toString() method and a gadget chain. Exploitation requires an application to unserialize attacker-supplied data with the affected classes available; successful attacks run code in the PHP process context.

The record

CVE
CVE-2021-3007
Published
Jan 4, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 4, 2021CVE publishedPublication date reported by the CVE source.
  2. Jan 8, 2021Exploitation reportedFreakOut botnet campaign exploitation
  3. Aug 3, 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

9.8GitHub Advisory DatabaseCVSS: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 exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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