Buffer overflow in the process_ra function in the router advertisement daemon (radvd) before 1.8.2 allows remote attackers to execute arbitrary code or cause a denial of service (crash) via a negative value in a label_len value.
Conclusion & alert: CVE-2011-3601 is rated Moderate Risk (63.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.96%). Core evidence: EPSS rose +2.09% over the last day, indicating growing attacker interest. 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 | 2026-06-15 | 1.87% | 3.96% | +2.09% |
| 2 | 2025-03-30 | 2.85% | 1.87% | -0.98% |
| 3 | 2025-03-29 | — | 2.85% | — |
Full EPSS history (7 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2011-3601 not yet assigned priority: Debian including 1 source packages (radvd), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2011-3601 |
gentoo
|
high | CVE-2011-3601: 1 GLSA(s) (201111-08), 1 atom(s) (net-misc/radvd); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-3601 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2011-3601 |
ubuntu
|
medium | CVE-2011-3601 medium priority: Ubuntu including 1 source packages (radvd), 6 status rows across 6 suites (hardy, lucid, maverick, natty, oneiric, upstream): released 3, not-affected 2, ignored 1. | https://ubuntu.com/security/CVE-2011-3601 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| litech | router_advertisement_daemon | <= 1.8.1 | cpe:2.3:a:litech:router_advertisement_daemon:*:*:*:*:*:*:*:* |