CVE-2017-8786: pcre pcre2
CVSS: 9.8v3.0CriticalModified
AliasesUBUNTU-CVE-2017-8786DEBIAN-CVE-2017-8786
Published 05-05-2017Last modified 05-08-2024
Vulnerability summary
CVE-2017-8786 is a critical (CVSS 9.8) vulnerability in pcre pcre2. EPSS estimates a 4.07% chance of exploitation in the next 30 days, higher than 90.5% of scored vulnerabilities. 2 public exploits are recorded.
CVSS score
9.8/10
010
Critical · v3.0 (NVD)EPSS score
4.07%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2reference
Timeline
- 05-05-2017PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 3 sources · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
4.07%
Chance of exploitation in the next 30 days
Percentile
91%
Versus all other CVEs
30-day change
0.00 pp
From 4.07% on 20-09-2026
20-09-202620-10-2026
EPSS score4.07%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundExploit Reference (bugs.exim.org)
Maturity: unknown
Exploit Reference (blogs.gentoo.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian1 product
- pcre2< 10.31-1
Pcre1 product
- pcre210.23
Ubuntu1 product
- pcre2All versions (No fix recorded)
3 vendors · 3 products
References
8 links- bugs.exim.org/show_bug.cgi?id=2079X Refsource MISCExploitIssue TrackingThird Party AdvisoryVDB Entry
- blogs.gentoo.org/ago/2017/04/29/libpcre-heap-based-buffer-overflow-write-in-pcre2test-c/X Refsource MISCExploitPatchThird Party AdvisoryVDB EntryREPORT