Memory leak in d1_both.c in the DTLS implementation in OpenSSL 0.9.8 before 0.9.8zb, 1.0.0 before 1.0.0n, and 1.0.1 before 1.0.1i allows remote attackers to cause a denial of service (memory consumption) via zero-length DTLS fragments that trigger improper handling of the return value of a certain insert function.
Conclusion & alert: CVE-2014-3507 is rated Moderate Risk (53/100): CVSS Medium severity, with high exploitation likelihood (EPSS 66.03%, 99th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. Mandatory action: High exploitation likelihood—assess exposure and prioritize 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 | 2026-04-27 | 67.47% | 66.03% | -1.45% |
| 2 | 2026-04-21 | 66.03% | 67.47% | +1.45% |
| 3 | 2026-03-04 | — | 66.03% | — |
Full EPSS history (59 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2014-3507 not yet assigned 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-2014-3507 |
gentoo
|
normal | CVE-2014-3507: 1 GLSA(s) (201412-39), 1 atom(s) (dev-libs/openssl); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2014-3507 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2014-3507 |
suse
|
high | CVE-2014-3507 severity important: SUSE including 172 source package names (compat-openssl098, libcrypto38-2.5.0-1.1, …), 408 product×package rows across 63 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (63 product lines)): Fixed 243, Known Not Affected 165. | https://www.suse.com/security/cve/CVE-2014-3507/ |
ubuntu
|
medium | CVE-2014-3507 medium priority: Ubuntu including 2 source packages (openssl, openssl098), 28 status rows across 14 suites (artful, bionic, cosmic, disco, lucid, precise, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): released 14, DNE 10, ignored 3, not-affected 1. | https://ubuntu.com/security/CVE-2014-3507 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| openssl | openssl | 0.9.8 | cpe:2.3:a:openssl:openssl:0.9.8:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8a | cpe:2.3:a:openssl:openssl:0.9.8a:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8b | cpe:2.3:a:openssl:openssl:0.9.8b:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8c | cpe:2.3:a:openssl:openssl:0.9.8c:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8d | cpe:2.3:a:openssl:openssl:0.9.8d:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8e | cpe:2.3:a:openssl:openssl:0.9.8e:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8f | cpe:2.3:a:openssl:openssl:0.9.8f:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8g | cpe:2.3:a:openssl:openssl:0.9.8g:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8h | cpe:2.3:a:openssl:openssl:0.9.8h:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8i | cpe:2.3:a:openssl:openssl:0.9.8i:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8j | cpe:2.3:a:openssl:openssl:0.9.8j:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8k | cpe:2.3:a:openssl:openssl:0.9.8k:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8l | cpe:2.3:a:openssl:openssl:0.9.8l:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8m | cpe:2.3:a:openssl:openssl:0.9.8m:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8m | cpe:2.3:a:openssl:openssl:0.9.8m:beta1:*:*:*:*:*:* |
| openssl | openssl | 0.9.8n | cpe:2.3:a:openssl:openssl:0.9.8n:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8o | cpe:2.3:a:openssl:openssl:0.9.8o:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8p | cpe:2.3:a:openssl:openssl:0.9.8p:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8q | cpe:2.3:a:openssl:openssl:0.9.8q:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8r | cpe:2.3:a:openssl:openssl:0.9.8r:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8s | cpe:2.3:a:openssl:openssl:0.9.8s:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8t | cpe:2.3:a:openssl:openssl:0.9.8t:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8u | cpe:2.3:a:openssl:openssl:0.9.8u:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8v | cpe:2.3:a:openssl:openssl:0.9.8v:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8w | cpe:2.3:a:openssl:openssl:0.9.8w:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8x | cpe:2.3:a:openssl:openssl:0.9.8x:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8y | cpe:2.3:a:openssl:openssl:0.9.8y:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8za | cpe:2.3:a:openssl:openssl:0.9.8za:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.0 | cpe:2.3:a:openssl:openssl:1.0.0:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.0 | cpe:2.3:a:openssl:openssl:1.0.0:beta1:*:*:*:*:*:* |
| openssl | openssl | 1.0.0 | cpe:2.3:a:openssl:openssl:1.0.0:beta2:*:*:*:*:*:* |
| openssl | openssl | 1.0.0 | cpe:2.3:a:openssl:openssl:1.0.0:beta3:*:*:*:*:*:* |
| openssl | openssl | 1.0.0 | cpe:2.3:a:openssl:openssl:1.0.0:beta4:*:*:*:*:*:* |
| openssl | openssl | 1.0.0 | cpe:2.3:a:openssl:openssl:1.0.0:beta5:*:*:*:*:*:* |
| openssl | openssl | 1.0.0a | cpe:2.3:a:openssl:openssl:1.0.0a:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.0b | cpe:2.3:a:openssl:openssl:1.0.0b:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.0c | cpe:2.3:a:openssl:openssl:1.0.0c:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.0d | cpe:2.3:a:openssl:openssl:1.0.0d:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.0e | cpe:2.3:a:openssl:openssl:1.0.0e:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.0f | cpe:2.3:a:openssl:openssl:1.0.0f:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.0g | cpe:2.3:a:openssl:openssl:1.0.0g:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.0h | cpe:2.3:a:openssl:openssl:1.0.0h:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.0i | cpe:2.3:a:openssl:openssl:1.0.0i:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.0j | cpe:2.3:a:openssl:openssl:1.0.0j:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.0k | cpe:2.3:a:openssl:openssl:1.0.0k:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.0l | cpe:2.3:a:openssl:openssl:1.0.0l:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.0m | cpe:2.3:a:openssl:openssl:1.0.0m:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.1 | cpe:2.3:a:openssl:openssl:1.0.1:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.1 | cpe:2.3:a:openssl:openssl:1.0.1:beta1:*:*:*:*:*:* |
| openssl | openssl | 1.0.1 | cpe:2.3:a:openssl:openssl:1.0.1:beta2:*:*:*:*:*:* |
| openssl | openssl | 1.0.1 | cpe:2.3:a:openssl:openssl:1.0.1:beta3:*:*:*:*:*:* |
| openssl | openssl | 1.0.1a | cpe:2.3:a:openssl:openssl:1.0.1a:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.1b | cpe:2.3:a:openssl:openssl:1.0.1b:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.1c | cpe:2.3:a:openssl:openssl:1.0.1c:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.1d | cpe:2.3:a:openssl:openssl:1.0.1d:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.1e | cpe:2.3:a:openssl:openssl:1.0.1e:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.1f | cpe:2.3:a:openssl:openssl:1.0.1f:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.1g | cpe:2.3:a:openssl:openssl:1.0.1g:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.1h | cpe:2.3:a:openssl:openssl:1.0.1h:*:*:*:*:*:*:* |