Off-by-one error in the SSL_get_shared_ciphers function in OpenSSL 0.9.7 up to 0.9.7l, and 0.9.8 up to 0.9.8f, might allow remote attackers to execute arbitrary code via a crafted packet that triggers a one-byte buffer underflow. NOTE: this issue was introduced as a result of a fix for CVE-2006-3738. As of 20071012, it is unknown whether code execution is possible.
Conclusion & alert: CVE-2007-5135 is rated Moderate Risk (56/100): CVSS Medium severity, with high exploitation likelihood (EPSS 16.06%, 96th 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 | 2026-06-15 | 53.12% | 16.06% | -37.06% |
| 2 | 2026-05-16 | 47.52% | 53.12% | +5.60% |
| 3 | 2026-02-02 | — | 47.52% | — |
Full EPSS history (24 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
low | CVE-2007-5135 low 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-2007-5135 |
gentoo
|
normal | CVE-2007-5135: 2 GLSA(s) (200710-06, 201412-11), 2 atom(s) (app-emulation/emul-linux-x86-baselibs, dev-libs/openssl); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2007-5135 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2007-5135 |
suse
|
medium | CVE-2007-5135 severity moderate: SUSE including 77 source package names (compat-openssl098, libopenssl-1_0_0-devel, …), 230 product×package rows across 36 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (36 product lines)): Known Not Affected 172, Fixed 58. | https://www.suse.com/security/cve/CVE-2007-5135/ |
ubuntu
|
medium | CVE-2007-5135 medium priority: Ubuntu including 2 source packages (openssl, openssl097), 18 status rows across 9 suites (dapper, edgy, feisty, gutsy, hardy, intrepid, jaunty, karmic, upstream): released 9, DNE 5, ignored 3, needs-triage 1. | https://ubuntu.com/security/CVE-2007-5135 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| openssl | openssl | 0.9.7 | cpe:2.3:a:openssl:openssl:0.9.7:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.7 | cpe:2.3:a:openssl:openssl:0.9.7:beta1:*:*:*:*:*:* |
| openssl | openssl | 0.9.7 | cpe:2.3:a:openssl:openssl:0.9.7:beta2:*:*:*:*:*:* |
| openssl | openssl | 0.9.7 | cpe:2.3:a:openssl:openssl:0.9.7:beta3:*:*:*:*:*:* |
| openssl | openssl | 0.9.7 | cpe:2.3:a:openssl:openssl:0.9.7:beta4:*:*:*:*:*:* |
| openssl | openssl | 0.9.7 | cpe:2.3:a:openssl:openssl:0.9.7:beta5:*:*:*:*:*:* |
| openssl | openssl | 0.9.7 | cpe:2.3:a:openssl:openssl:0.9.7:beta6:*:*:*:*:*:* |
| openssl | openssl | 0.9.7a | cpe:2.3:a:openssl:openssl:0.9.7a:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.7b | cpe:2.3:a:openssl:openssl:0.9.7b:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.7c | cpe:2.3:a:openssl:openssl:0.9.7c:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.7d | cpe:2.3:a:openssl:openssl:0.9.7d:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.7e | cpe:2.3:a:openssl:openssl:0.9.7e:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.7f | cpe:2.3:a:openssl:openssl:0.9.7f:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.7g | cpe:2.3:a:openssl:openssl:0.9.7g:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.7h | cpe:2.3:a:openssl:openssl:0.9.7h:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.7i | cpe:2.3:a:openssl:openssl:0.9.7i:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.7j | cpe:2.3:a:openssl:openssl:0.9.7j:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.7k | cpe:2.3:a:openssl:openssl:0.9.7k:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.7l | cpe:2.3:a:openssl:openssl:0.9.7l:*:*:*:*:*:*:* |
| 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:*:*:*:*:*:*:* |