BusyBox FEATURE_WGET_TIMEOUT wget.c null pointer dereference
Published Aug 19, 2026
4.8
MEDIUMCVSS 4.0
EPSS 0.16%
Description
A vulnerability has been found in BusyBox up to 1.30.1. This vulnerability affects unknown code of the file networking/wget.c of the component FEATURE_WGET_TIMEOUT Handler. Such manipulation of the argument -T leads to null pointer dereference. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The name of the patch is 83a40bf7a93c8ac093d33ab452222dd5b9eb57ff. A patch should be applied to remediate this issue.
Affected products
-
- Version 1.30.0StatusaffectedConstraints-
- Version 1.30.1StatusaffectedConstraints-
- Version
No data.
No data.
Red Hat Enterprise Linux 6
busybox
Fix deferred
Red Hat Hardened Images
busybox
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | busybox | Fix deferred | n/a |
| Red Hat Hardened Images | busybox | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
A flaw was found in BusyBox where a local attacker can trigger a null pointer dereference in the FEATURE_WGET_TIMEOUT handler within the networking/wget.c component by manipulating the -T argument. This vulnerability, which affects BusyBox versions up to 1.30.1, leads to a denial of service as the wget process crashes. Red Hat products shipping BusyBox versions above 1.30.1 are not affected by this vulnerability.
Red Hat mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Metrics
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
1 other source (NVD) ▾
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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:X/AU:X/R:X/V:X/RE:X/U:X
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2 other sources (CVE.org, NVD) ▾
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C
1 other source (NVD) ▾
AV:L/AC:L/Au:S/C:N/I:N/A:P
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Aug 25, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
Aug–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.16% (0.00160) | 4.50th | v5 (v2026.06.15) |
| Aug 19, 2026 | 0.12% (0.00120) | 2.21th | v5 (v2026.06.15) |
References (11)
- https://access.redhat.com/security/cve/CVE-2026-76014 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2519381 Issue Tracking
- https://gist.github.com/wyxstarry/5c199ec824928c5ae5816aaecbc6df03 exploit
- https://github.com/mirror/busybox/commit/83a40bf7a93c8ac093d33ab452222dd5b9eb57ff patch
- https://github.com/mirror/busybox/issues/124 issue-tracking
- https://nvd.nist.gov/vuln/detail/CVE-2026-76014
- https://vuldb.com/cve/CVE-2026-76014 third-party-advisory
- https://vuldb.com/submit/878212 third-party-advisory
- https://vuldb.com/vuln/391923 vdb-entrytechnical-description
- https://vuldb.com/vuln/391923/cti signaturepermissions-required
- https://www.cve.org/CVERecord?id=CVE-2026-76014
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2026-76014 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2519381 | Issue Tracking | |
| https://gist.github.com/wyxstarry/5c199ec824928c5ae5816aaecbc6df03 | exploit | |
| https://github.com/mirror/busybox/commit/83a40bf7a93c8ac093d33ab452222dd5b9eb57ff | patch | |
| https://github.com/mirror/busybox/issues/124 | issue-tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2026-76014 | ||
| https://vuldb.com/cve/CVE-2026-76014 | third-party-advisory | |
| https://vuldb.com/submit/878212 | third-party-advisory | |
| https://vuldb.com/vuln/391923 | vdb-entrytechnical-description | |
| https://vuldb.com/vuln/391923/cti | signaturepermissions-required | |
| https://www.cve.org/CVERecord?id=CVE-2026-76014 |
Change history (0)
No recorded changes yet.