The map_yp_alias function in functions/imap_general.php in SquirrelMail before 1.4.19-1 on Debian GNU/Linux, and possibly other operating systems and versions, allows remote attackers to execute arbitrary commands via shell metacharacters in a username string that is used by the ypmatch program. NOTE: this issue exists because of an incomplete fix for CVE-2009-1579.
Conclusion & alert: CVE-2009-1381 is rated High Exploit Risk (66/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.59%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 2025-12-28 | 0.79% | 0.59% | -0.20% |
| 2 | 2025-12-27 | 0.59% | 0.79% | +0.20% |
| 3 | 2025-10-28 | — | 0.59% | — |
Full EPSS history (15 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
gentoo
|
high | CVE-2009-1381: 1 GLSA(s) (201001-08), 1 atom(s) (mail-client/squirrelmail); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2009-1381 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2009-1381 |
ubuntu
|
medium | CVE-2009-1381 medium priority: Ubuntu including 1 source packages (squirrelmail), 6 status rows across 6 suites (dapper, hardy, intrepid, jaunty, karmic, upstream): released 4, ignored 1, not-affected 1. | https://ubuntu.com/security/CVE-2009-1381 |
Not vulnerable. This issue did not affect the versions of squirrelmail as shipped with Red Hat Enterprise Linux 3, 4, or 5. Updates for squirrelmail released via RHSA-2009:1066 (https://rhn.redhat.com/errata/RHSA-2009-1066.html) fixed original flaw CVE-2009-1579 without introducing CVE-2009-1381.
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| squirrelmail | imap_general.php | 1.2.2 | cpe:2.3:a:squirrelmail:imap_general.php:1.2.2:*:*:*:*:*:*:* |
| squirrelmail | squirrelmail | 1.2.5 | cpe:2.3:a:squirrelmail:squirrelmail:1.2.5:*:*:*:*:*:*:* |
| squirrelmail | squirrelmail | 1.2.6 | cpe:2.3:a:squirrelmail:squirrelmail:1.2.6:*:*:*:*:*:*:* |
| squirrelmail | squirrelmail | 1.2.6-rc1 | cpe:2.3:a:squirrelmail:squirrelmail:1.2.6-rc1:*:*:*:*:*:*:* |
| squirrelmail | squirrelmail | 1.2.7 | cpe:2.3:a:squirrelmail:squirrelmail:1.2.7:*:*:*:*:*:*:* |
| squirrelmail | squirrelmail | 1.2.8 | cpe:2.3:a:squirrelmail:squirrelmail:1.2.8:*:*:*:*:*:*:* |
| squirrelmail | squirrelmail | 1.2.9 | cpe:2.3:a:squirrelmail:squirrelmail:1.2.9:*:*:*:*:*:*:* |
| squirrelmail | squirrelmail | 1.2.10 | cpe:2.3:a:squirrelmail:squirrelmail:1.2.10:*:*:*:*:*:*:* |
| squirrelmail | squirrelmail | 1.2.11 | cpe:2.3:a:squirrelmail:squirrelmail:1.2.11:*:*:*:*:*:*:* |
| squirrelmail | squirrelmail | 1.4.0 | cpe:2.3:a:squirrelmail:squirrelmail:1.4.0:*:*:*:*:*:*:* |
| squirrelmail | squirrelmail | 1.4.0-r1 | cpe:2.3:a:squirrelmail:squirrelmail:1.4.0-r1:*:*:*:*:*:*:* |
| squirrelmail | squirrelmail | 1.4.1 | cpe:2.3:a:squirrelmail:squirrelmail:1.4.1:*:*:*:*:*:*:* |