Cross-site scripting (XSS) vulnerability in the Flash component infrastructure in YUI 2.8.0 through 2.9.0, as used in Bugzilla 3.7.x and 4.0.x before 4.0.9, 4.1.x and 4.2.x before 4.2.4, and 4.3.x and 4.4.x before 4.4rc1, allows remote attackers to inject arbitrary web script or HTML via vectors related to swfstore.swf, a similar issue to CVE-2010-4209.
Conclusion & alert: CVE-2012-5883 is rated Moderate Risk (41.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.63%). 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 | 2026-03-04 | 0.43% | 0.63% | +0.20% |
| 2 | 2026-03-01 | 0.63% | 0.43% | -0.20% |
| 3 | 2026-02-13 | — | 0.63% | — |
Full EPSS history (32 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
ubuntu
|
medium | CVE-2012-5883 medium priority: Ubuntu including 2 source packages (maas, yui), 38 status rows across 19 suites (artful, bionic, cosmic, disco, hardy, lucid, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 16, DNE 11, ignored 10, needs-triage 1. | https://ubuntu.com/security/CVE-2012-5883 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| mozilla | bugzilla | 3.7 | cpe:2.3:a:mozilla:bugzilla:3.7:*:*:*:*:*:*:* |
| mozilla | bugzilla | 3.7.1 | cpe:2.3:a:mozilla:bugzilla:3.7.1:*:*:*:*:*:*:* |
| mozilla | bugzilla | 3.7.2 | cpe:2.3:a:mozilla:bugzilla:3.7.2:*:*:*:*:*:*:* |
| mozilla | bugzilla | 3.7.3 | cpe:2.3:a:mozilla:bugzilla:3.7.3:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.0 | cpe:2.3:a:mozilla:bugzilla:4.0:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.0 | cpe:2.3:a:mozilla:bugzilla:4.0:rc1:*:*:*:*:*:* |
| mozilla | bugzilla | 4.0 | cpe:2.3:a:mozilla:bugzilla:4.0:rc2:*:*:*:*:*:* |
| mozilla | bugzilla | 4.0.1 | cpe:2.3:a:mozilla:bugzilla:4.0.1:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.0.2 | cpe:2.3:a:mozilla:bugzilla:4.0.2:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.0.3 | cpe:2.3:a:mozilla:bugzilla:4.0.3:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.0.4 | cpe:2.3:a:mozilla:bugzilla:4.0.4:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.0.5 | cpe:2.3:a:mozilla:bugzilla:4.0.5:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.0.6 | cpe:2.3:a:mozilla:bugzilla:4.0.6:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.0.7 | cpe:2.3:a:mozilla:bugzilla:4.0.7:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.0.8 | cpe:2.3:a:mozilla:bugzilla:4.0.8:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.1 | cpe:2.3:a:mozilla:bugzilla:4.1:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.1.1 | cpe:2.3:a:mozilla:bugzilla:4.1.1:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.1.2 | cpe:2.3:a:mozilla:bugzilla:4.1.2:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.1.3 | cpe:2.3:a:mozilla:bugzilla:4.1.3:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.2 | cpe:2.3:a:mozilla:bugzilla:4.2:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.2 | cpe:2.3:a:mozilla:bugzilla:4.2:rc1:*:*:*:*:*:* |
| mozilla | bugzilla | 4.2 | cpe:2.3:a:mozilla:bugzilla:4.2:rc2:*:*:*:*:*:* |
| mozilla | bugzilla | 4.2.1 | cpe:2.3:a:mozilla:bugzilla:4.2.1:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.2.2 | cpe:2.3:a:mozilla:bugzilla:4.2.2:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.2.3 | cpe:2.3:a:mozilla:bugzilla:4.2.3:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.3 | cpe:2.3:a:mozilla:bugzilla:4.3:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.3.1 | cpe:2.3:a:mozilla:bugzilla:4.3.1:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.3.2 | cpe:2.3:a:mozilla:bugzilla:4.3.2:*:*:*:*:*:*:* |
| mozilla | bugzilla | 4.3.3 | cpe:2.3:a:mozilla:bugzilla:4.3.3:*:*:*:*:*:*:* |
| yahoo | yui | 2.8.0 | cpe:2.3:a:yahoo:yui:2.8.0:*:*:*:*:*:*:* |
| yahoo | yui | 2.8.1 | cpe:2.3:a:yahoo:yui:2.8.1:*:*:*:*:*:*:* |
| yahoo | yui | 2.8.1 | cpe:2.3:a:yahoo:yui:2.8.1:pr1:*:*:*:*:*:* |
| yahoo | yui | 2.8.2 | cpe:2.3:a:yahoo:yui:2.8.2:*:*:*:*:*:*:* |
| yahoo | yui | 2.9.0 | cpe:2.3:a:yahoo:yui:2.9.0:*:*:*:*:*:*:* |
| yahoo | yui | 2.9.0 | cpe:2.3:a:yahoo:yui:2.9.0:pr2:*:*:*:*:*:* |
| yahoo | yui | 2.9.0 | cpe:2.3:a:yahoo:yui:2.9.0:pr4:*:*:*:*:*:* |