CVE & CISA-KEV Catalog

CVE-2026-41054

HIGH
7.8
CVSS v3
NVD

Description

In `src/havegecmd.c`, the `socket_handler` function performs a credential check on the abstract UNIX socket (`\0/sys/entropy/haveged`). However, while it detects if the connecting user is not root (`cred.uid != 0`) and prepares a negative acknowledgement (`ASCII_NAK`), it **fails to stop execution**. The code proceeds to the `switch` statement, allowing any local unprivileged user to execute privileged commands such as `MAGIC_CHROOT`.

CWE-305

How to fix

Remediation Available
havegedDebian
Fixed in:1.9.14-1+deb11u1CVE-2026-41054
Fixed in:1.9.14-1+deb12u1CVE-2026-41054
Fixed in:1.9.19-12+deb13u1CVE-2026-41054
Fixed in:1.9.21-1CVE-2026-41054
havegedUbuntu
Fixed in:1.9.14-1ubuntu1+esm1~22.04.1USN-8358-1
Fixed in:1.9.14-1ubuntu2+esm1~24.04.1USN-8358-1
Fixed in:1.9.19-12+deb13u1build0.25.10.1USN-8358-1
libhavege2Ubuntu
Fixed in:1.9.14-1ubuntu1+esm1~22.04.1USN-8358-1
Fixed in:1.9.14-1ubuntu2+esm1~24.04.1USN-8358-1
Fixed in:1.9.19-12+deb13u1build0.25.10.1USN-8358-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U

Exploit Intelligence

0.18%probability of exploitation in 30 days
8thpercentile

Low risk: more likely to be exploited than 8% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-05.