Multiple stack-based buffer overflows in json parsing in PostgreSQL before 9.3.x before 9.3.10 and 9.4.x before 9.4.5 allow attackers to cause a denial of service (server crash) via unspecified vectors, which are not properly handled in (1) json or (2) jsonb values.
Conclusion & alert: CVE-2015-5289 is rated Moderate Risk (56/100): CVSS Medium severity, with high exploitation likelihood (EPSS 5.04%, 91th 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 | 6.57% | 5.04% | -1.53% |
| 2 | 2026-05-13 | 9.97% | 6.57% | -3.40% |
| 3 | 2026-02-25 | — | 9.97% | — |
Full EPSS history (23 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.4 | 2.0 | MEDIUM |
|
10.0 | 4.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
gentoo
|
normal | CVE-2015-5289: 1 GLSA(s) (201701-33), 1 atom(s) (dev-db/postgresql); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-5289 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2015-5289 |
ubuntu
|
medium | CVE-2015-5289 medium priority: Ubuntu including 4 source packages (postgresql-8.4, postgresql-9.1, postgresql-9.3, postgresql-9.4), 32 status rows across 8 suites (precise, trusty, upstream, vivid, wily, xenial, yakkety, zesty): DNE 22, released 7, ignored 1, needs-triage 1, not-affected 1. | https://ubuntu.com/security/CVE-2015-5289 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| postgresql | postgresql | >= 9.3.0, < 9.3.10 | cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* |
| postgresql | postgresql | >= 9.4.0, < 9.4.5 | cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 12.04 | cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* |
| canonical | ubuntu_linux | 15.04 | cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:* |