Algorithmic complexity vulnerability in the regular expression parser in TCL before 8.4.17, as used in PostgreSQL 8.2 before 8.2.6, 8.1 before 8.1.11, 8.0 before 8.0.15, and 7.4 before 7.4.19, allows remote authenticated users to cause a denial of service (memory consumption) via a crafted "complex" regular expression with doubly-nested states.
Conclusion & alert: CVE-2007-6067 is rated High Exploit Risk (76.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.89%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +3.48% over the last day, indicating growing attacker interest. Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 0.41% | 3.89% | +3.48% |
| 2 | 2026-06-07 | 0.53% | 0.41% | -0.12% |
| 3 | 2026-04-12 | — | 0.53% | — |
Full EPSS history (20 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.8 | 2.0 | MEDIUM |
|
8.0 | 6.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
gentoo
|
high | CVE-2007-6067: 1 GLSA(s) (200801-15), 1 atom(s) (dev-db/postgresql); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2007-6067 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2007-6067 |
ubuntu
|
medium | CVE-2007-6067 medium priority: Ubuntu including 2 source packages (postgresql-8.1, postgresql-8.2), 14 status rows across 7 suites (dapper, edgy, feisty, gutsy, hardy, intrepid, upstream): DNE 5, released 5, ignored 2, needs-triage 2. | https://ubuntu.com/security/CVE-2007-6067 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| postgresql | postgresql | 7.3 | cpe:2.3:a:postgresql:postgresql:7.3:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.3.1 | cpe:2.3:a:postgresql:postgresql:7.3.1:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.3.2 | cpe:2.3:a:postgresql:postgresql:7.3.2:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.3.3 | cpe:2.3:a:postgresql:postgresql:7.3.3:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.3.4 | cpe:2.3:a:postgresql:postgresql:7.3.4:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.3.6 | cpe:2.3:a:postgresql:postgresql:7.3.6:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.3.8 | cpe:2.3:a:postgresql:postgresql:7.3.8:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.3.9 | cpe:2.3:a:postgresql:postgresql:7.3.9:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.3.10 | cpe:2.3:a:postgresql:postgresql:7.3.10:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.3.11 | cpe:2.3:a:postgresql:postgresql:7.3.11:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.3.12 | cpe:2.3:a:postgresql:postgresql:7.3.12:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.3.13 | cpe:2.3:a:postgresql:postgresql:7.3.13:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.3.14 | cpe:2.3:a:postgresql:postgresql:7.3.14:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.3.15 | cpe:2.3:a:postgresql:postgresql:7.3.15:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.3.16 | cpe:2.3:a:postgresql:postgresql:7.3.16:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.3.19 | cpe:2.3:a:postgresql:postgresql:7.3.19:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.4 | cpe:2.3:a:postgresql:postgresql:7.4:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.4.1 | cpe:2.3:a:postgresql:postgresql:7.4.1:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.4.2 | cpe:2.3:a:postgresql:postgresql:7.4.2:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.4.3 | cpe:2.3:a:postgresql:postgresql:7.4.3:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.4.4 | cpe:2.3:a:postgresql:postgresql:7.4.4:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.4.5 | cpe:2.3:a:postgresql:postgresql:7.4.5:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.4.6 | cpe:2.3:a:postgresql:postgresql:7.4.6:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.4.7 | cpe:2.3:a:postgresql:postgresql:7.4.7:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.4.8 | cpe:2.3:a:postgresql:postgresql:7.4.8:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.4.9 | cpe:2.3:a:postgresql:postgresql:7.4.9:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.4.10 | cpe:2.3:a:postgresql:postgresql:7.4.10:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.4.11 | cpe:2.3:a:postgresql:postgresql:7.4.11:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.4.12 | cpe:2.3:a:postgresql:postgresql:7.4.12:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.4.13 | cpe:2.3:a:postgresql:postgresql:7.4.13:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.4.14 | cpe:2.3:a:postgresql:postgresql:7.4.14:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.4.16 | cpe:2.3:a:postgresql:postgresql:7.4.16:*:*:*:*:*:*:* |
| postgresql | postgresql | 7.4.17 | cpe:2.3:a:postgresql:postgresql:7.4.17:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.0 | cpe:2.3:a:postgresql:postgresql:8.0:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.0.1 | cpe:2.3:a:postgresql:postgresql:8.0.1:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.0.2 | cpe:2.3:a:postgresql:postgresql:8.0.2:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.0.3 | cpe:2.3:a:postgresql:postgresql:8.0.3:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.0.4 | cpe:2.3:a:postgresql:postgresql:8.0.4:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.0.5 | cpe:2.3:a:postgresql:postgresql:8.0.5:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.0.7 | cpe:2.3:a:postgresql:postgresql:8.0.7:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.0.8 | cpe:2.3:a:postgresql:postgresql:8.0.8:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.0.9 | cpe:2.3:a:postgresql:postgresql:8.0.9:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.0.11 | cpe:2.3:a:postgresql:postgresql:8.0.11:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.0.13 | cpe:2.3:a:postgresql:postgresql:8.0.13:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.0.317 | cpe:2.3:a:postgresql:postgresql:8.0.317:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.1.1 | cpe:2.3:a:postgresql:postgresql:8.1.1:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.1.3 | cpe:2.3:a:postgresql:postgresql:8.1.3:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.1.4 | cpe:2.3:a:postgresql:postgresql:8.1.4:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.1.5 | cpe:2.3:a:postgresql:postgresql:8.1.5:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.1.7 | cpe:2.3:a:postgresql:postgresql:8.1.7:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.1.8 | cpe:2.3:a:postgresql:postgresql:8.1.8:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.1.9 | cpe:2.3:a:postgresql:postgresql:8.1.9:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.2 | cpe:2.3:a:postgresql:postgresql:8.2:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.2.2 | cpe:2.3:a:postgresql:postgresql:8.2.2:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.2.3 | cpe:2.3:a:postgresql:postgresql:8.2.3:*:*:*:*:*:*:* |
| postgresql | postgresql | 8.2.4 | cpe:2.3:a:postgresql:postgresql:8.2.4:*:*:*:*:*:*:* |
| tcl_tk | tcl_tk | <= 8.4.16 | cpe:2.3:a:tcl_tk:tcl_tk:*:*:*:*:*:*:*:* |