CVE-2025-4432: ring · Unthrottled Resource Allocation
Affects ringSource GCVE Database
Not known to be exploited · CVSS 5.3 Medium.
Data as of 5 Nov 2026, 16:33 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 5.3 |
|---|
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LExploitation evidence
Disclosed: evidence found.
CVE published 9 May 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| ring | Affected
| Fixed in– |
AI-suggested
The vendor advisory does not explicitly confirm the availability of a patch or fixed version. No specific mitigations are described in the advisory. Users should monitor the official Red Hat advisory and the Ring package release notes for updates and apply fixes once available.
Description
CVE-2025-4432 is a vulnerability in the Rust Ring package where a panic can be triggered when overflow checking is enabled. This issue affects the QUIC protocol implementation, allowing an attacker to cause a denial of service by sending a specially crafted packet. The panic is likely to occur unintentionally in approximately one out of every 2^32 packets sent or received. The vulnerability results in low availability impact without affecting confidentiality or integrity.
References
- access.redhat.com/security/cve/CVE-2025-4432 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2350655 (opens in a new tab)
- github.com/advisories/GHSA-4p46-pwfr-66x6 (opens in a new tab)
- github.com/briansmith/ring (opens in a new tab)
- github.com/briansmith/ring/blob/main/RELEASES.md (opens in a new tab)
- github.com/briansmith/ring/commit/ec2d3cf1d91f148c84e4806b4f0b3c98f6df3b38 (opens in a new tab)
- github.com/briansmith/ring/pull/2447 (opens in a new tab)
- rustsec.org/advisories/RUSTSEC-2025-0009.html (opens in a new tab)