Format string vulnerability in Evolution 1.4 through 2.3.6.1 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via the calendar entries such as task lists, which are not properly handled when the user selects the Calendars tab.
Conclusion & alert: CVE-2005-2550 is rated Moderate Risk (60.8/100): CVSS High severity, with high exploitation likelihood (EPSS 4.43%, 90th 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 | 2026-06-15 | 5.16% | 4.43% | -0.73% |
| 2 | 2025-03-30 | 5.40% | 5.16% | -0.24% |
| 3 | 2025-03-29 | — | 5.40% | — |
Full EPSS history (9 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
|
high | CVE-2005-2550 high priority: Debian including 1 source packages (evolution), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2005-2550 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2005-2550 |
ubuntu
|
medium | CVE-2005-2550 medium priority: Ubuntu including 1 source packages (evolution), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): not-affected 3, needs-triage 1. | https://ubuntu.com/security/CVE-2005-2550 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| gnome | evolution | 1.4 | cpe:2.3:a:gnome:evolution:1.4:*:*:*:*:*:*:* |
| gnome | evolution | 1.5 | cpe:2.3:a:gnome:evolution:1.5:*:*:*:*:*:*:* |
| gnome | evolution | 2.0 | cpe:2.3:a:gnome:evolution:2.0:*:*:*:*:*:*:* |
| gnome | evolution | 2.1 | cpe:2.3:a:gnome:evolution:2.1:*:*:*:*:*:*:* |
| gnome | evolution | 2.2 | cpe:2.3:a:gnome:evolution:2.2:*:*:*:*:*:*:* |
| gnome | evolution | 2.3.1 | cpe:2.3:a:gnome:evolution:2.3.1:*:*:*:*:*:*:* |
| gnome | evolution | 2.3.2 | cpe:2.3:a:gnome:evolution:2.3.2:*:*:*:*:*:*:* |
| gnome | evolution | 2.3.3 | cpe:2.3:a:gnome:evolution:2.3.3:*:*:*:*:*:*:* |
| gnome | evolution | 2.3.4 | cpe:2.3:a:gnome:evolution:2.3.4:*:*:*:*:*:*:* |
| gnome | evolution | 2.3.5 | cpe:2.3:a:gnome:evolution:2.3.5:*:*:*:*:*:*:* |
| gnome | evolution | 2.3.6.1 | cpe:2.3:a:gnome:evolution:2.3.6.1:*:*:*:*:*:*:* |