In Horde_Crypt before 2.7.6, as used in Horde Groupware Webmail Edition through 5.2.17, OS Command Injection can occur if the attacker is an authenticated Horde Webmail user, has PGP features enabled in their preferences, and attempts to encrypt an email addressed to a maliciously crafted email address.
Conclusion & alert: CVE-2017-7413 is rated High Risk (73.9/100): CVSS High severity, with high exploitation likelihood (EPSS 24.48%, 96th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +11.22% over the last day, indicating growing attacker interest. 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 | 2026-05-24 | 13.25% | 24.48% | +11.22% |
| 2 | 2025-11-21 | 11.26% | 13.25% | +1.99% |
| 3 | 2025-11-18 | — | 11.26% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.0 | HIGH |
|
2.8 | 5.9 | [email protected] |
| 9.0 | 2.0 | HIGH |
|
8.0 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2017-7413 not yet assigned priority: Debian including 1 source packages (php-horde-crypt), 3 status rows across 3 suites (bookworm, bullseye, sid): resolved 3. | https://security-tracker.debian.org/tracker/CVE-2017-7413 |
ubuntu
|
medium | CVE-2017-7413 medium priority: Ubuntu including 1 source packages (php-horde-crypt), 21 status rows across 21 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, mantic, noble, oracular, plucky, precise, questing, trusty, upstream, xenial, yakkety, zesty): DNE 12, not-affected 4, ignored 3, needed 1, released 1. | https://ubuntu.com/security/CVE-2017-7413 |
| URL | Tags |
|---|---|
| https://lists.debian.org/debian-lts-announce/2018/06/msg00006.html | |
| https://lists.horde.org/archives/horde/Week-of-Mon-20170403/056767.html | Mailing List Vendor Advisory |