GHSA-xh69-987w-hrp8 · Severity: medium · Ecosystem: rubygems — resolv vulnerable to DoS via insufficient DNS domain name length validation
The attack vector is a potential Denial of Service (DoS). The vulnerability is caused by an insufficient check on the length of a decompressed domain name within a DNS packet. An attacker can craft a malicious DNS packet containing a highly compressed domain name. When the resolv library parses such a packet, the name decompression process consumes a large amount of CPU resources, as the library does not limit the resulting length of the name. This resource consumption can cause the application thread to become unresponsive, resulting in a Denial of Service condition.
Conclusion & alert: CVE-2025-24294 is rated Moderate Risk (47.6/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.27%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-24 | 0.22% | 0.27% | +0.05% |
| 2 | 2026-05-20 | 0.27% | 0.22% | -0.05% |
| 3 | 2026-05-08 | — | 0.27% | — |
Full EPSS history (19 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
GHSA-xh69-987w-hrp8 · Severity: medium · Ecosystem: rubygems — resolv vulnerable to DoS via insufficient DNS domain name length validation
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2025-24294 not yet assigned priority: Debian including 3 source packages (ruby2.7, ruby3.1, ruby3.3), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 5. | https://security-tracker.debian.org/tracker/CVE-2025-24294 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2025-24294 |
suse
|
medium | — | https://www.suse.com/security/cve/CVE-2025-24294/ |
ubuntu
|
medium | CVE-2025-24294 medium priority: Ubuntu including 8 source packages (jruby, ruby2.3, …), 47 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): DNE 21, needs-triage 13, released 10, not-affected 2, ignored 1. | https://ubuntu.com/security/CVE-2025-24294 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| No affected products in dataset. | |||