CVE-2026-6368: glibc Use of Uninitialized Resource
CVSS: 2.1v4.0LowAwaiting analysis
AliasesUBUNTU-CVE-2026-6368DEBIAN-CVE-2026-6368
Published 10-08-2026Last modified 12-08-2026
Vulnerability summary
CVE-2026-6368 is a low (CVSS 2.1) Use of Uninitialized Resource vulnerability in glibc. EPSS estimates a 0.11% chance of exploitation in the next 30 days, higher than 1% of scored vulnerabilities.
CVSS score
2.1/10
010
Low · v4.0 (CVE.org)EPSS score
0.11%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 17 · Related 12MGASA-2026-0391OPENSUSE-SU-2026:11660-1OPENSUSE-SU-2026:21968-1RHSA-2026:53069RHSA-2026:76777RHSA-2026:76781RHSA-2026:79281SUSE-SU-2026:23738-1SUSE-SU-2026:23830-1SUSE-SU-2026:23929-1SUSE-SU-2026:23934-1SUSE-SU-2026:23957-1SUSE-SU-2026:4204-1SUSE-SU-2026:4250-1SUSE-SU-2026:4591-1USN-8737-1USN-8737-2
Timeline
- 10-08-2026PublishedVulnerability first disclosed.
- 12-08-2026Last modifiedVulnerability information updated.
Description
Calling wordexp with WRDE_APPEND in the GNU C Library version 2.0 to version 2.43 can cause the interface to return invalid memory in the we_wordv member, which on subsequent calls to wordfree may abort the process.
CVSS metrics
4 scores · 4 sources · 1 versionLow 2.1Preferred score · CVE.org (CNA)
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/S:P/AU:Y/U:GreenSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated2.1LowCVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/S:P/AU:Y/U:Green
- OSV · DebianEcosystem advisory · calculated2.1LowCVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:Y/R:X/V:X/RE:X/U:Green
- NVDNIST2.1LowCVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:Y/R:X/V:X/RE:X/U:Green
EPSS trend
Probability
0.11%
Chance of exploitation in the next 30 days
Percentile
1%
Versus all other CVEs
30-day change
0.00 pp
From 0.11% on 20-09-2026
20-09-202620-10-2026
EPSS score0.11%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu2 products
- eglibcAll versions (No fix recorded)
- glibcAll versions (No fix recorded) | < 2.35-0ubuntu3.15 | < 2.39-0ubuntu8.9 | < 2.43-2ubuntu2.4
Debian1 product
- glibcAll versions (No fix recorded) | < 2.43-4
Glibc1 product
- glibc≥ 1.93-260, < 2.43
3 vendors · 4 products
References
8 links- sourceware.org/bugzilla/show_bug.cgi?id=34090Issue Tracking
- sourceware.org/gitVendor Advisory
