CRITICAL
pcre2: Heap-based buffer overflow in pcre2test.c
Published May 5, 2017
9.8
CRITICALCVSS 3.0
EPSS 4.07%
Description
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.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
9.8 CRITICAL NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
1 other source (Red Hat) ▾
3.3 LOW Red Hat
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact Low
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
4.07% 0.04066
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.04066
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.07% (0.04066) | 90.35th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.07% (0.04066) | 89.32th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.13% (0.01134) | 76.40th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.74% (0.03743) | 79.78th | v4 (v2025.03.14) |
| Jul 20, 2024 | 1.47% (0.01467) | 86.87th | v3 (v2023.03.01) |
| May 16, 2024 | 1.47% (0.01467) | 86.67th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.47% (0.01467) | 84.67th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.94% (0.01943) | 48.45th | v1 |
| Jan 6, 2022 | 1.94% (0.01943) | 47.92th | v1 |
| Sep 1, 2021 | 1.94% (0.01943) | 76.51th | v1 |
| Apr 14, 2021 | 1.94% (0.01943) | 0.00th | v1 |
Weaknesses (2)
References (9)
- https://access.redhat.com/security/cve/CVE-2017-8786 Vendor Advisory
- https://blogs.gentoo.org/ago/2017/04/29/libpcre-heap-based-buffer-overflow-write-in-pcre2test-c/ x_refsource_MISCExploitPatchThird Party AdvisoryVDB Entry
- https://bugs.exim.org/show_bug.cgi?id=2079 x_refsource_MISCExploitIssue TrackingThird Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1500717 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2017-8786
- https://security.gentoo.org/glsa/201710-09 vendor-advisoryx_refsource_GENTOO
- https://vcs.pcre.org/pcre2?view=revision&revision=696 x_refsource_MISCPatchVendor Advisory
- https://vcs.pcre.org/pcre2?view=revision&revision=697 x_refsource_MISCPatchVendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2017-8786
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2017-8786 | Vendor Advisory | |
| https://blogs.gentoo.org/ago/2017/04/29/libpcre-heap-based-buffer-overflow-write-in-pcre2test-c/ | x_refsource_MISCExploitPatchThird Party AdvisoryVDB Entry | |
| https://bugs.exim.org/show_bug.cgi?id=2079 | x_refsource_MISCExploitIssue TrackingThird Party AdvisoryVDB Entry | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1500717 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-8786 | ||
| https://security.gentoo.org/glsa/201710-09 | vendor-advisoryx_refsource_GENTOO | |
| https://vcs.pcre.org/pcre2?view=revision&revision=696 | x_refsource_MISCPatchVendor Advisory | |
| https://vcs.pcre.org/pcre2?view=revision&revision=697 | x_refsource_MISCPatchVendor Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2017-8786 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published May 5, 2017
Updated Aug 5, 2024
Reserved May 4, 2017
Link CVE-2017-8786
CISA Vulnrichment
Updated n/a