pcre2test.c in PCRE2 10.23 allows remote attackers to cause a denial of service…
Priority MEDIUM 49CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.
Summary
pcre2test.c in PCRE2 10.23 allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted regular expression.
Why it matters now
EPSS 0.04066 90th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2017-8786
- 2026-10-03 Alias added: GHSA-5w9f-5949-m2r9
References
More Pcre2 vulnerabilities
- TI-2022-19872 Integer overflow vulnerability in pcre2test before 10.41 allows attackers to cause a… CVSS 3.1HIGH 7.5
- TI-2025-35893 PCRE2: heap-buffer-overflow read in match_ref due to missing boundary restoration in SCS CVSS 4.0MEDIUM 6.9
- TI-2026-60391 Integer overflow in PCRE2 CVSS 3.1HIGH 7.4
- TI-2026-60393 Out-of-bounds read in PCRE2 CVSS 3.1MEDIUM 6.5
- TI-2015-02839 Heap-based buffer overflow in PCRE 8.34 through 8.37 and PCRE2 10.10 allows remote… CVSS 3.1CRITICAL 9.8
- TI-2016-02677 The compile_branch function in pcre_compile.c in PCRE 8.x before 8.39 and pcre2_compile.c… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2017-8786 · CVE Program
- CVE-2017-8786 · NVD
- FIRST EPSS
- GHSA-5w9f-5949-m2r9 · GitHub Advisory Database · CC BY 4.0
- CVE-2017-8786 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences