CVE-2021-3007

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 75.3%, top 1% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this weekElevated
9.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 75%
CISA-KEV: Not listedEPSS: 75%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Laminas Project laminas-http before 2.14.2, and Zend Framework 3.0.0, has a deserialization vulnerability that can lead to remote code execution if the content is controllable, related to the __destruct method of the Zend\Http\Response\Stream class in Stream.php. NOTE: Zend Framework is no longer supported by the maintainer. NOTE: the laminas-http vendor considers this a "vulnerability in the PHP language itself" but has added certain type checking as a way to prevent exploitation in (unrecommended) use cases where attacker-supplied data can be deserialized

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
79(Track*)
EG Risk 79/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation75% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS
99.5%
KEV
Not listed

Published

January 4, 2021

Last Modified

November 21, 2024

Advisory Details (4)

Auto-updated Jun 12, 2026
Patch available. Sources: github_pr, github_release.
generic

FreakOut – Leveraging Newest Vulnerabilities for creating a Botnet - Check Point Research

https://research.checkpoint.com/2021/freakout-leveraging-newest-vulnerabilities-for-creating-a-botnet/
github_release Patch Available

2.14.2

Patch available: laminas/laminas-http 2.14.2

https://github.com/laminas/laminas-http/releases/tag/2.14.2
github_pr Patch Available

Security tightening: verify a stream file name is a string before unlinking

Patch available: laminas/laminas-http 2.14.2 (PR #48 merged 2021-01-05)

https://github.com/laminas/laminas-http/pull/48
generic

zendframework3-/zend framework3 反序列化 rce.md at main · Ling-Yizhou/zendframework3- · GitHub

https://github.com/Ling-Yizhou/zendframework3-/blob/main/zend%20framework3%20%E5%8F%8D%E5%BA%8F%E5%88%97%E5%8C%96%20rce.md

Affected Packages

(2 across 1 ecosystem)
Packagist(2)
PackageVulnerable rangeFixed inDependents
laminas/laminas-http2.0.0 ... 2.9.1 (87 versions)2.14.2—
zendframework/zendframework2.0.0 ... 3.0.0 (75 versions)——

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 38× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-23 02:00 UTCEG score recompute
  2. 2026-07-22 22:47 UTCEG score recompute
  3. 2026-07-22 14:06 UTCEPSS rescore
  4. 2026-07-21 15:22 UTCEPSS rescore
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  7. 2026-07-19 04:52 UTCOSV refresh
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  1. 2026-07-02 16:57 UTCEPSS rescore
  2. 2026-07-01 15:04 UTCEPSS rescore
  3. 2026-07-01 11:18 UTCOSV refresh
  4. 2026-06-30 23:20 UTCEPSS rescore
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  10. 2026-06-25 13:48 UTCEPSS rescore
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  14. 2026-06-23 21:31 UTCEPSS rescore
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  16. 2026-06-21 01:58 UTCEPSS rescore
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  18. 2026-06-18 17:51 UTCEPSS rescore
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  20. 2026-06-16 17:51 UTCEPSS rescore
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  22. 2026-06-15 17:46 UTCEPSS rescore
  23. 2026-06-13 17:43 UTCOSV refresh
  24. 2026-06-12 23:10 UTCEPSS rescore
  25. 2026-06-11 13:58 UTCEPSS rescore
  26. 2026-06-11 13:58 UTCEPSS rescore
  27. 2026-06-07 15:23 UTCEPSS rescore
  28. 2026-06-07 15:23 UTCEPSS rescore
  29. 2026-06-06 13:46 UTCEPSS rescore
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  31. 2026-06-04 13:10 UTCEPSS rescore
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  35. 2026-05-31 22:29 UTCEPSS rescore
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  37. 2026-05-29 13:42 UTCEPSS rescore
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  40. 2026-05-27 13:39 UTCEPSS rescore
  41. 2026-05-27 13:39 UTCEPSS rescore
  42. 2026-05-26 22:40 UTCEG score recompute

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2021/CVE-2021-3007.yaml
    First seen Jan 1, 2021

    Laminas Project laminas-http - Remote Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2021-3007?
CVE-2021-3007 is a critical vulnerability published on January 4, 2021. Laminas Project laminas-http before 2.14.2, and Zend Framework 3.0.0, has a deserialization vulnerability that can lead to remote code execution if the content is controllable, related to the destruct method of the Zend\Http\Response\Stream class in Stream.php. NOTE: Zend Framework is no longer…
When was CVE-2021-3007 disclosed?
CVE-2021-3007 was first published in the National Vulnerability Database on January 4, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-3007 actively exploited?
CVE-2021-3007 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-3007?
CVE-2021-3007 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2021-3007?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-3007, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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