The rfc1738_do_escape function in ftp.c for Squid 2.5 STABLE11 and earlier allows remote FTP servers to cause a denial of service (segmentation fault) via certain "odd" responses.
Conclusion & alert: CVE-2005-3258 is rated Moderate Risk (48.5/100): CVSS Medium severity, with high exploitation likelihood (EPSS 24.10%, 96th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. Mandatory action: High exploitation likelihood—assess exposure and prioritize 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 | 2025-08-20 | 33.82% | 24.10% | -9.72% |
| 2 | 2025-03-30 | 40.10% | 33.82% | -6.28% |
| 3 | 2025-03-29 | — | 40.10% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2005-3258 unimportant priority: Debian including 1 source packages (squid), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2005-3258 |
redhat
|
— | — | https://access.redhat.com/security/cve/CVE-2005-3258 |
ubuntu
|
medium | CVE-2005-3258 medium priority: Ubuntu including 1 source packages (squid), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): not-affected 3, needs-triage 1. | https://ubuntu.com/security/CVE-2005-3258 |
Not vulnerable. These issues do not affect the versions of Squid as shipped with Red Hat Enterprise Linux 2.1, 3, or 4.
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| squid | squid | 2.0.patch1 | cpe:2.3:a:squid:squid:2.0.patch1:*:*:*:*:*:*:* |
| squid | squid | 2.0.patch2 | cpe:2.3:a:squid:squid:2.0.patch2:*:*:*:*:*:*:* |
| squid | squid | 2.0.pre1 | cpe:2.3:a:squid:squid:2.0.pre1:*:*:*:*:*:*:* |
| squid | squid | 2.0.release | cpe:2.3:a:squid:squid:2.0.release:*:*:*:*:*:*:* |
| squid | squid | 2.1.patch1 | cpe:2.3:a:squid:squid:2.1.patch1:*:*:*:*:*:*:* |
| squid | squid | 2.1.patch2 | cpe:2.3:a:squid:squid:2.1.patch2:*:*:*:*:*:*:* |
| squid | squid | 2.1.pre1 | cpe:2.3:a:squid:squid:2.1.pre1:*:*:*:*:*:*:* |
| squid | squid | 2.1.pre3 | cpe:2.3:a:squid:squid:2.1.pre3:*:*:*:*:*:*:* |
| squid | squid | 2.1.pre4 | cpe:2.3:a:squid:squid:2.1.pre4:*:*:*:*:*:*:* |
| squid | squid | 2.1.release | cpe:2.3:a:squid:squid:2.1.release:*:*:*:*:*:*:* |
| squid | squid | 2.2.devel3 | cpe:2.3:a:squid:squid:2.2.devel3:*:*:*:*:*:*:* |
| squid | squid | 2.2.devel4 | cpe:2.3:a:squid:squid:2.2.devel4:*:*:*:*:*:*:* |
| squid | squid | 2.2.pre1 | cpe:2.3:a:squid:squid:2.2.pre1:*:*:*:*:*:*:* |
| squid | squid | 2.2.pre2 | cpe:2.3:a:squid:squid:2.2.pre2:*:*:*:*:*:*:* |
| squid | squid | 2.2.stable1 | cpe:2.3:a:squid:squid:2.2.stable1:*:*:*:*:*:*:* |
| squid | squid | 2.2.stable2 | cpe:2.3:a:squid:squid:2.2.stable2:*:*:*:*:*:*:* |
| squid | squid | 2.2.stable3 | cpe:2.3:a:squid:squid:2.2.stable3:*:*:*:*:*:*:* |
| squid | squid | 2.2.stable4 | cpe:2.3:a:squid:squid:2.2.stable4:*:*:*:*:*:*:* |
| squid | squid | 2.2.stable5 | cpe:2.3:a:squid:squid:2.2.stable5:*:*:*:*:*:*:* |
| squid | squid | 2.3.devel2 | cpe:2.3:a:squid:squid:2.3.devel2:*:*:*:*:*:*:* |
| squid | squid | 2.3.devel3 | cpe:2.3:a:squid:squid:2.3.devel3:*:*:*:*:*:*:* |
| squid | squid | 2.3.stable1 | cpe:2.3:a:squid:squid:2.3.stable1:*:*:*:*:*:*:* |
| squid | squid | 2.3.stable2 | cpe:2.3:a:squid:squid:2.3.stable2:*:*:*:*:*:*:* |
| squid | squid | 2.3.stable3 | cpe:2.3:a:squid:squid:2.3.stable3:*:*:*:*:*:*:* |
| squid | squid | 2.3.stable4 | cpe:2.3:a:squid:squid:2.3.stable4:*:*:*:*:*:*:* |
| squid | squid | 2.3.stable5 | cpe:2.3:a:squid:squid:2.3.stable5:*:*:*:*:*:*:* |
| squid | squid | 2.4 | cpe:2.3:a:squid:squid:2.4:*:*:*:*:*:*:* |
| squid | squid | 2.4.stable1 | cpe:2.3:a:squid:squid:2.4.stable1:*:*:*:*:*:*:* |
| squid | squid | 2.4.stable2 | cpe:2.3:a:squid:squid:2.4.stable2:*:*:*:*:*:*:* |
| squid | squid | 2.4.stable3 | cpe:2.3:a:squid:squid:2.4.stable3:*:*:*:*:*:*:* |
| squid | squid | 2.4.stable4 | cpe:2.3:a:squid:squid:2.4.stable4:*:*:*:*:*:*:* |
| squid | squid | 2.4.stable6 | cpe:2.3:a:squid:squid:2.4.stable6:*:*:*:*:*:*:* |
| squid | squid | 2.4.stable7 | cpe:2.3:a:squid:squid:2.4.stable7:*:*:*:*:*:*:* |
| squid | squid | 2.5.6 | cpe:2.3:a:squid:squid:2.5.6:*:*:*:*:*:*:* |
| squid | squid | 2.5.stable1 | cpe:2.3:a:squid:squid:2.5.stable1:*:*:*:*:*:*:* |
| squid | squid | 2.5.stable2 | cpe:2.3:a:squid:squid:2.5.stable2:*:*:*:*:*:*:* |
| squid | squid | 2.5.stable3 | cpe:2.3:a:squid:squid:2.5.stable3:*:*:*:*:*:*:* |
| squid | squid | 2.5.stable4 | cpe:2.3:a:squid:squid:2.5.stable4:*:*:*:*:*:*:* |
| squid | squid | 2.5.stable5 | cpe:2.3:a:squid:squid:2.5.stable5:*:*:*:*:*:*:* |
| squid | squid | 2.5.stable6 | cpe:2.3:a:squid:squid:2.5.stable6:*:*:*:*:*:*:* |
| squid | squid | 2.5.stable7 | cpe:2.3:a:squid:squid:2.5.stable7:*:*:*:*:*:*:* |
| squid | squid | 2.5.stable8 | cpe:2.3:a:squid:squid:2.5.stable8:*:*:*:*:*:*:* |
| squid | squid | 2.5.stable9 | cpe:2.3:a:squid:squid:2.5.stable9:*:*:*:*:*:*:* |
| squid | squid | 2.5.stable10 | cpe:2.3:a:squid:squid:2.5.stable10:*:*:*:*:*:*:* |
| squid | squid | 2.5.stable11 | cpe:2.3:a:squid:squid:2.5.stable11:*:*:*:*:*:*:* |