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Vulnerability record · CVE-2018-6797 · published 17 April 2018

CVE-2018-6797: Debian linux out-of-bounds write vulnerability

Debian · Debian Linux

An issue was discovered in Perl 5.18 through 5.26. A crafted regular expression can cause a heap-based buffer overflow, with control over the bytes written.

9.8 CVSS 3.0 Critical EPSS 6.5% · top 6.5% CWE-787 · Out-of-bounds write
9.8CVSS 3.0 base score, v2 7.5
6.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

Description

An issue was discovered in Perl 5.18 through 5.26. A crafted regular expression can cause a heap-based buffer overflow, with control over the bytes written.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securitytracker.com/id/1040681 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1042004 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2018:1192 Third Party Advisory
https://rt.perl.org/Public/Bug/Display.html?id=132227 PatchVendor Advisory
https://security.gentoo.org/glsa/201909-01
https://usn.ubuntu.com/3625-1/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4172 Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2020.html
http://www.securitytracker.com/id/1040681 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1042004 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2018:1192 Third Party Advisory
https://rt.perl.org/Public/Bug/Display.html?id=132227 PatchVendor Advisory
https://security.gentoo.org/glsa/201909-01
https://usn.ubuntu.com/3625-1/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4172 Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2020.html

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Source: NIST National Vulnerability Database (record CVE-2018-6797), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.