Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2018-6797

33
FAUCET Score

CVE-2018-6797 is a critical heap-based buffer overflow vulnerability affecting Perl versions 5.18 through 5.26, impacting distributions like Canonical, Debian, and Red Hat. With a CVSS score of 9.8, it allows unauthenticated attackers to achieve high confidentiality, integrity, and availability impacts through crafted regular expressions. Despite its severity, there is currently no public exploit code (Metasploit, Nuclei, ExploitDB) and no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
>= 5.18, <= 5.26CPE matchmatch criteria
cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
17.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
6.60%
Probability of exploitation in next 30 days
EPSS Percentile
93.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0660 is in the 88th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-perl524-perl-4:5.24.0-380.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSFixed in: rh-perl524-perl-4:5.24.0-380.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-perl524-perl-4:5.24.0-380.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSFixed in: rh-perl524-perl-4:5.24.0-380.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-perl524-perl-4:5.24.0-380.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-perl520-perl

Vendor Advisories (1)

redhatCVE-2018-6797Moderate

perl: heap write overflow in regcomp.c

Apr 14, 2018

References

access.redhat.com / errata/RHSA-2018:1192
Third Party Advisory
rt.perl.org / Public/Bug/Display.html
PatchVendor Advisory
security.gentoo.org / glsa/201909-01
usn.ubuntu.com / 3625-1
Third Party Advisory
debian.org / security/2018/dsa-4172
Third Party Advisory
oracle.com / security-alerts/cpujul2020.html
securitytracker.com / id/1040681
Third Party AdvisoryVDB Entry
securitytracker.com / id/1042004
Third Party AdvisoryVDB Entry