noVNC before 0.5 does not set the secure flag for a cookie in an https session, which makes it easier for remote attackers to capture this cookie by intercepting its transmission within an http session.
Conclusion & alert: CVE-2013-7436 is rated Moderate Risk (40.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.61%). 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 | 2025-03-30 | 1.34% | 0.61% | -0.73% |
| 2 | 2025-03-29 | 0.61% | 1.34% | +0.73% |
| 3 | 2025-03-19 | — | 0.61% | — |
Full EPSS history (6 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 |
|---|---|---|---|
debian
|
not yet assigned | CVE-2013-7436 not yet assigned priority: Debian including 1 source packages (novnc), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2013-7436 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2013-7436 |
suse
|
medium | CVE-2013-7436 severity moderate: SUSE including 1 source package names (novnc-0.4-0.13.1), 1 product×package rows across 1 product lines (SUSE OpenStack Cloud 5): Fixed 1. | https://www.suse.com/security/cve/CVE-2013-7436/ |
ubuntu
|
medium | CVE-2013-7436 medium priority: Ubuntu including 1 source packages (novnc), 14 status rows across 14 suites (artful, bionic, cosmic, disco, lucid, precise, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 9, DNE 2, ignored 2, released 1. | https://ubuntu.com/security/CVE-2013-7436 |