Node.js versions before 10.23.1, 12.20.1, 14.15.4, 15.5.1 are vulnerable to a use-after-free bug in its TLS implementation. When writing…

Description

Node.js versions before 10.23.1, 12.20.1, 14.15.4, 15.5.1 are vulnerable to a use-after-free bug in its TLS implementation. When writing to a TLS enabled socket, node::StreamBase::Write calls node::TLSWrap::DoWrite with a freshly allocated WriteWrap object as first argument. If the DoWrite method does not return an error, this object is passed back to the caller as part of a StreamWriteResult structure. This may be exploited to corrupt memory leading to a Denial of Service or potentially other exploits.

Scores

EPSS (exploitation in 30 days)

9.1% · top 4.7% of all CVEs (6 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.

Weakness

• CWE-416: Use After Free (CWE-416) (opens in a new tab)All about CWE-416 and its CVEs

Affected products

• NodeJS · Node

  • affected 4.0 – < 4.*
  • affected 5.0 – < 5.*
  • affected 6.0 – < 6.*
  • affected 7.0 – < 7.*
  • affected 8.0 – < 8.*
  • affected 9.0 – < 9.*
  • affected 10.0 – < 10.23.1
  • affected 11.0 – < 11.*
  • affected 12.0 – < 12.20.1
  • affected 13.0 – < 13.*
  • affected 14.0 – < 14.15.4
  • affected 15.0 – < 15.5.1

References (9)

• https://nodejs.org/en/blog/vulnerability/january-2021-security-releases/ (opens in a new tab)x_refsource_MISCx_transferred
• https://hackerone.com/reports/988103 (opens in a new tab)x_refsource_MISCx_transferred
• DSA-4826 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• FEDORA-2021-fb1a136393 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• GLSA-202101-07 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• FEDORA-2021-d5b2c18fe6 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• https://www.oracle.com/security-alerts/cpujan2021.html (opens in a new tab)x_refsource_MISCx_transferred
• https://security.netapp.com/advisory/ntap-20210212-0003/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2020-8265](https://trackcve.app/badge/CVE-2020-8265.svg)](https://trackcve.app/cve/CVE-2020-8265)

Record last updated 30 Apr 2025, 22:24 UTC.