Integer overflow in the EVP_EncryptUpdate function in crypto/evp/evp_enc.c in OpenSSL before 1.0.1t and 1.0.2 before 1.0.2h allows remote attackers to cause a denial of service (heap memory corruption) via a large amount of data.
Conclusion & alert: CVE-2016-2106 is rated Moderate Risk (63.4/100): CVSS High severity, with high exploitation likelihood (EPSS 67.35%, 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 | 2026-06-04 | 68.45% | 67.35% | -1.10% |
| 2 | 2026-04-21 | 67.35% | 68.45% | +1.10% |
| 3 | 2026-03-04 | — | 67.35% | — |
Full EPSS history (46 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.0 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2016-2106 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-2016-2106 |
gentoo
|
normal | CVE-2016-2106: 1 GLSA(s) (201612-16), 1 atom(s) (dev-libs/openssl); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2016-2106 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2016-2106 |
suse
|
low | CVE-2016-2106 severity low: SUSE including 481 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 849 product×package rows across 107 product lines (HPE Helion OpenStack 8, Image SLES12-SP5-Azure-SAP-BYOS, … (107 product lines)): Fixed 472, Known Not Affected 220, Known Affected 157. | https://www.suse.com/security/cve/CVE-2016-2106/ |
ubuntu
|
low | CVE-2016-2106 low priority: Ubuntu including 2 source packages (openssl, openssl098), 22 status rows across 11 suites (artful, bionic, cosmic, disco, precise, trusty, upstream, wily, xenial, yakkety, zesty): released 11, DNE 9, ignored 1, needs-triage 1. | https://ubuntu.com/security/CVE-2016-2106 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| openssl | openssl | <= 1.0.1s | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2 | cpe:2.3:a:openssl:openssl:1.0.2:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2 | cpe:2.3:a:openssl:openssl:1.0.2:beta1:*:*:*:*:*:* |
| openssl | openssl | 1.0.2 | cpe:2.3:a:openssl:openssl:1.0.2:beta2:*:*:*:*:*:* |
| openssl | openssl | 1.0.2 | cpe:2.3:a:openssl:openssl:1.0.2:beta3:*:*:*:*:*:* |
| openssl | openssl | 1.0.2a | cpe:2.3:a:openssl:openssl:1.0.2a:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2b | cpe:2.3:a:openssl:openssl:1.0.2b:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2c | cpe:2.3:a:openssl:openssl:1.0.2c:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2d | cpe:2.3:a:openssl:openssl:1.0.2d:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2e | cpe:2.3:a:openssl:openssl:1.0.2e:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2f | cpe:2.3:a:openssl:openssl:1.0.2f:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2g | cpe:2.3:a:openssl:openssl:1.0.2g:*:*:*:*:*:*:* |
| redhat | enterprise_linux_desktop | 7.0 | cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_hpc_node | 7.0 | cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_hpc_node_eus | 7.2 | cpe:2.3:o:redhat:enterprise_linux_hpc_node_eus:7.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server | 7.0 | cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 7.2 | cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.2 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_workstation | 7.0 | cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_desktop | 6.0 | cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_hpc_node | 6.0 | cpe:2.3:o:redhat:enterprise_linux_hpc_node:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server | 6.0 | cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_workstation | 6.0 | cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* |