Horde IMP 4.3.6 and earlier does not request that the web browser avoid DNS prefetching of domain names contained in e-mail messages, which makes it easier for remote attackers to determine the network location of the webmail user by logging DNS requests.
Conclusion & alert: CVE-2010-0463 is rated Moderate Risk (48.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.93%). Core evidence: EPSS rose +1.60% 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 | 0.33% | 1.93% | +1.60% |
| 2 | 2023-03-07 | 1.14% | 0.33% | -0.81% |
| 3 | 2022-02-04 | — | 1.14% | — |
Full EPSS history (3 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 |
|---|---|---|---|
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2010-0463 |
ubuntu
|
negligible | CVE-2010-0463 negligible priority: Ubuntu including 2 source packages (imp3, imp4), 40 status rows across 20 suites (dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety): DNE 26, ignored 11, needs-triage 1, not-affected 1, released 1. | https://ubuntu.com/security/CVE-2010-0463 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| horde | imp | <= 4.3.6 | cpe:2.3:a:horde:imp:*:*:*:*:*:*:*:* |
| horde | imp | 2.0 | cpe:2.3:a:horde:imp:2.0:*:*:*:*:*:*:* |
| horde | imp | 2.2 | cpe:2.3:a:horde:imp:2.2:*:*:*:*:*:*:* |
| horde | imp | 2.2.1 | cpe:2.3:a:horde:imp:2.2.1:*:*:*:*:*:*:* |
| horde | imp | 2.2.2 | cpe:2.3:a:horde:imp:2.2.2:*:*:*:*:*:*:* |
| horde | imp | 2.2.3 | cpe:2.3:a:horde:imp:2.2.3:*:*:*:*:*:*:* |
| horde | imp | 2.2.4 | cpe:2.3:a:horde:imp:2.2.4:*:*:*:*:*:*:* |
| horde | imp | 2.2.5 | cpe:2.3:a:horde:imp:2.2.5:*:*:*:*:*:*:* |
| horde | imp | 2.2.6 | cpe:2.3:a:horde:imp:2.2.6:*:*:*:*:*:*:* |
| horde | imp | 2.2.7 | cpe:2.3:a:horde:imp:2.2.7:*:*:*:*:*:*:* |
| horde | imp | 2.2.8 | cpe:2.3:a:horde:imp:2.2.8:*:*:*:*:*:*:* |
| horde | imp | 2.3 | cpe:2.3:a:horde:imp:2.3:*:*:*:*:*:*:* |
| horde | imp | 3.0 | cpe:2.3:a:horde:imp:3.0:*:*:*:*:*:*:* |
| horde | imp | 3.1 | cpe:2.3:a:horde:imp:3.1:*:*:*:*:*:*:* |
| horde | imp | 3.1.2 | cpe:2.3:a:horde:imp:3.1.2:*:*:*:*:*:*:* |
| horde | imp | 3.2 | cpe:2.3:a:horde:imp:3.2:*:*:*:*:*:*:* |
| horde | imp | 3.2.1 | cpe:2.3:a:horde:imp:3.2.1:*:*:*:*:*:*:* |
| horde | imp | 3.2.2 | cpe:2.3:a:horde:imp:3.2.2:*:*:*:*:*:*:* |
| horde | imp | 3.2.3 | cpe:2.3:a:horde:imp:3.2.3:*:*:*:*:*:*:* |
| horde | imp | 3.2.4 | cpe:2.3:a:horde:imp:3.2.4:*:*:*:*:*:*:* |
| horde | imp | 3.2.5 | cpe:2.3:a:horde:imp:3.2.5:*:*:*:*:*:*:* |
| horde | imp | 3.2.6 | cpe:2.3:a:horde:imp:3.2.6:*:*:*:*:*:*:* |
| horde | imp | 3.2.7 | cpe:2.3:a:horde:imp:3.2.7:*:*:*:*:*:*:* |
| horde | imp | 3.2.7 | cpe:2.3:a:horde:imp:3.2.7:rc1:*:*:*:*:*:* |
| horde | imp | 4.0 | cpe:2.3:a:horde:imp:4.0:*:*:*:*:*:*:* |
| horde | imp | 4.0.1 | cpe:2.3:a:horde:imp:4.0.1:*:*:*:*:*:*:* |
| horde | imp | 4.0.2 | cpe:2.3:a:horde:imp:4.0.2:*:*:*:*:*:*:* |
| horde | imp | 4.0.3 | cpe:2.3:a:horde:imp:4.0.3:*:*:*:*:*:*:* |
| horde | imp | 4.0.4 | cpe:2.3:a:horde:imp:4.0.4:*:*:*:*:*:*:* |
| horde | imp | 4.1.3 | cpe:2.3:a:horde:imp:4.1.3:*:*:*:*:*:*:* |
| horde | imp | 4.1.5 | cpe:2.3:a:horde:imp:4.1.5:*:*:*:*:*:*:* |
| horde | imp | 4.1.6 | cpe:2.3:a:horde:imp:4.1.6:*:*:*:*:*:*:* |
| horde | imp | 4.2 | cpe:2.3:a:horde:imp:4.2:*:*:*:*:*:*:* |
| horde | imp | 4.2.1 | cpe:2.3:a:horde:imp:4.2.1:*:*:*:*:*:*:* |
| horde | imp | 4.2.2 | cpe:2.3:a:horde:imp:4.2.2:*:*:*:*:*:*:* |
| horde | imp | 4.3 | cpe:2.3:a:horde:imp:4.3:*:*:*:*:*:*:* |
| horde | imp | 4.3.1 | cpe:2.3:a:horde:imp:4.3.1:*:*:*:*:*:*:* |
| horde | imp | 4.3.2 | cpe:2.3:a:horde:imp:4.3.2:*:*:*:*:*:*:* |
| horde | imp | 4.3.3 | cpe:2.3:a:horde:imp:4.3.3:*:*:*:*:*:*:* |
| horde | imp | 4.3.4 | cpe:2.3:a:horde:imp:4.3.4:*:*:*:*:*:*:* |
| horde | imp | 4.3.5 | cpe:2.3:a:horde:imp:4.3.5:*:*:*:*:*:*:* |