CVE-2018-19044· NVD / CVE Program· CNA mitre

keepalived 2.0.8 didn't check for pathnames with symlinks when writing data to a temporary file upon a call to PrintData or PrintStats.

keepalived 2.0.8 didn't check for pathnames with symlinks when writing data to a temporary file upon a call to PrintData or PrintStats. This allowed local users to overwrite arbitrary files if fs.protected_symlinks is set to 0, as demonstrated by a symlink from /tmp/keepalived.data or /tmp/keepalived.stats to /etc/passwd.

MediumCVSS 4.7 · v3.0—No exploit Fix available

Published: Nov 8, 2018
Updated: Jun 16, 2026
EPSS: 0.5% · 40th percentile
CWE: CWE-59

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Action score

Monitor

Low priority for now.

CVSS: 18 / 40 · 4.7 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.5%

Affected systems

Vendor	Product	CPE
keepalived	keepalived	cpe:2.3:a:keepalived:keepalived

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

keepalived keepalived2.0.8

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:12	keepalived	before 1:2.0.10-1	1:2.0.10-1
openSUSE:Tumbleweed	keepalived	before 2.2.2-4.2	2.2.2-4.2
Red Hat:enterprise_linux:7::server	keepalived	before 0:1.3.5-16.el7	0:1.3.5-16.el7
Red Hat:enterprise_linux:7::server	keepalived-debuginfo	before 0:1.3.5-16.el7	0:1.3.5-16.el7
SUSE:Linux Enterprise High Availability Extension 15 SP1	keepalived	before 2.0.19-3.3.1	2.0.19-3.3.1

Same product

keepalived: all records

Other highest-scoring records for the same primary product.

CVE-2018-19115keepalived before 2.0.7 has a heap-based buffer overflow when parsing HTTP status codes resulting in DoS or possibly unspecified other impac
40Plan
CVE-2018-19045keepalived 2.0.8 used mode 0666 when creating new temporary files upon a call to PrintData or PrintStats, potentially leaking sensitive info
31Monitor
CVE-2021-44225In Keepalived through 2.2.4, the D-Bus policy does not sufficiently restrict the message destination, allowing any user to inspect and manip
21Monitor
CVE-2018-19046keepalived 2.0.8 didn't check for existing plain files when writing data to a temporary file upon a call to PrintData or PrintStats.
18Monitor
CVE-2011-1784The pidfile_write function in core/pidfile.c in keepalived 1.2.2 and earlier uses 0666 permissions for the (1) keepalived.pid, (2) checkers.
14Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
debian:keepalived	1:2.0.10-1 · Debian:12	Package registry (OSV)
opensuse:keepalived	2.2.2-4.2 · openSUSE:Tumbleweed	Package registry (OSV)
red hat:keepalived	0:1.3.5-16.el7 · Red Hat:enterprise_linux:7::server	Package registry (OSV)
red hat:keepalived-debuginfo	0:1.3.5-16.el7 · Red Hat:enterprise_linux:7::server	Package registry (OSV)
suse:keepalived	2.0.19-3.3.1 · SUSE:Linux Enterprise High Availability Extension 15 SP1	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

acassen/keepalivedcommit 04f2d32

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Someone with local access to the system can trigger it.
A low-privileged account is enough.
No user action is required.
Special conditions such as timing or configuration are required.

If successful

Confidentiality: none
Integrity: high · data or configuration can be modified
Availability: none

Attack vector: Local
Attack complexity: High
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: High
Availability impact: None

Weakness class (CWE)

CWE-59 · Improper Link Resolution Before File Access ('Link Following')

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

Fix✗ → ✓Sep 28, 2026, 10:46 PM UTC

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records