The NIST SP 800-90A default statement of the Dual Elliptic Curve Deterministic Random Bit Generation (Dual_EC_DRBG) algorithm contains point Q constants with a possible relationship to certain "skeleton key" values, which might allow context-dependent attackers to defeat cryptographic protection mechanisms by leveraging knowledge of those values. NOTE: this is a preliminary CVE for Dual_EC_DRBG; future research may provide additional details about point Q and associated attacks, and could potentially lead to a RECAST or REJECT of this CVE.
Conclusion & alert: CVE-2007-6755 is rated Moderate Risk (47.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.41%). 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 | 2026-06-16 | 1.63% | 1.41% | -0.23% |
| 2 | 2026-06-15 | 0.33% | 1.63% | +1.30% |
| 3 | 2025-11-09 | — | 0.33% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.8 | 2.0 | MEDIUM |
|
8.6 | 4.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2007-6755 unimportant priority: Debian including 1 source packages (openssl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2007-6755 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2007-6755 |
ubuntu
|
low | CVE-2007-6755 low priority: Ubuntu including 10 source packages (bouncycastle, gnutls26, …), 155 status rows across 16 suites (artful, bionic, cosmic, lucid, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 79, DNE 38, ignored 31, needs-triage 7. | https://ubuntu.com/security/CVE-2007-6755 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| dell | bsafe_crypto-c-micro-edition | >= 3.0.0.0, <= 3.0.0.20 | cpe:2.3:a:dell:bsafe_crypto-c-micro-edition:*:*:*:*:*:*:*:* |
| dell | bsafe_crypto-j | 5.0 | cpe:2.3:a:dell:bsafe_crypto-j:5.0:*:*:*:*:*:*:* |
| dell | bsafe_crypto-j | 5.0.1 | cpe:2.3:a:dell:bsafe_crypto-j:5.0.1:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://arstechnica.com/security/2013/09/stop-using-nsa-influence-code-in-our-product-rsa-tells-customers/ | Third Party Advisory |
| http://blog.cryptographyengineering.com/2013/09/rsa-warns-developers-against-its-own.html | Third Party Advisory |
| http://blog.cryptographyengineering.com/2013/09/the-many-flaws-of-dualecdrbg.html | Third Party Advisory |
| http://rump2007.cr.yp.to/15-shumow.pdf | Third Party Advisory |
| http://stream.wsj.com/story/latest-headlines/SS-2-63399/SS-2-332655/ | Not Applicable |
| http://threatpost.com/in-wake-of-latest-crypto-revelations-everything-is-suspect | Third Party Advisory |
| http://www.securityfocus.com/bid/63657 | Third Party Advisory VDB Entry |
| https://www.schneier.com/blog/archives/2007/11/the_strange_sto.html | Third Party Advisory |