Security readout for executives and security teams
This is a denial-of-service issue in Prosody, an XMPP messaging server. Older versions could spend excessive CPU handling repeated SSL/TLS renegotiation requests, potentially degrading or interrupting chat service. The supplied sources identify the fix as Prosody 0.11.9 and distributor security updates. Exposure is most likely for internet-accessible or partner-accessible Prosody XMPP servers running versions before 0.11.9. Internal-only deployments may still be exposed if untrusted users or compromised hosts can reach TLS-enabled XMPP services. Treat as a service availability risk, not confirmed remote code execution. Patch exposed Prosody servers promptly, especially where messaging uptime matters to operations or customers. Mitigation focus: Upgrade Prosody to 0.11.9 or later where vendor packaging supports it.; Apply Debian, Fedora, or Gentoo security updates for Prosody where applicable.; Check current Prosody vendor guidance before relying on compensating controls..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-32920 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://blog.prosody.im/prosody-0.11.9-released/CVE reference · x_refsource_MISC
- DSA-4916CVE reference · vendor-advisory, x_refsource_DEBIAN
- FEDORA-2021-b5d8c6d086CVE reference · vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-a33f6e36e1CVE reference · vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-498be8f560CVE reference · vendor-advisory, x_refsource_FEDORA
- https://security.gentoo.org/glsa/202105-15CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.