pubRsaDecryptSignedElementExt in MatrixSSL 4.0.1 Open, as used in Inside Secure TLS Toolkit, has a stack-based buffer overflow during X.509 certificate verification because of missing validation in psRsaDecryptPubExt in crypto/pubkey/rsa_pub.c.
Conclusion & alert: CVE-2019-10914 is rated Moderate Risk (58.9/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.34%). 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 | 2026-03-09 | 0.40% | 0.34% | -0.05% |
| 2 | 2025-03-30 | 0.56% | 0.40% | -0.17% |
| 3 | 2025-03-29 | — | 0.56% | — |
Full EPSS history (9 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.8 | 3.0 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
ubuntu
|
medium | CVE-2019-10914 medium priority: Ubuntu including 1 source packages (matrixssl), 5 status rows across 5 suites (bionic, cosmic, trusty, upstream, xenial): DNE 4, needs-triage 1. | https://ubuntu.com/security/CVE-2019-10914 |
| URL | Tags |
|---|---|
| https://bugs.chromium.org/p/project-zero/issues/detail?id=1785 | Issue Tracking Patch Third Party Advisory |
| https://github.com/matrixssl/matrixssl/issues/26 | Patch Third Party Advisory |
| https://github.com/matrixssl/matrixssl/releases/tag/4-0-2-open | Release Notes Third Party Advisory |
| https://www.openwall.com/lists/oss-security/2019/02/15/1 |