CVE-2015-1430: Buffer overflow in xymon 4.3.17-1.

This month

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2015-1430 is a critical-severity flaw (CVSS 9.8) affecting xymon. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in xymon 4.3.17-1.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-119
Published	2017-08-28
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: xymon

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-08-28 15:29 UTCPublished CVE record published
2026-06-17 00:22 UTCUpdated Record last modified

xymon xymon DOWNGRADE

Affected: 4.3.17-1

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.3.17-1

1. Check installed version

apt-cache policy xymon || rpm -q xymon || xymon --version

2. No fixed release: DOWNGRADE to a release before 4.3.17-1 (Debian / Ubuntu)

apt-cache madison xymon sudo apt install xymon=<VERSION_BEFORE_4.3.17-1> sudo apt-mark hold xymon

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list xymon sudo dnf downgrade xymon-<VERSION_BEFORE_4.3.17-1> sudo dnf versionlock add xymon

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2015-1430?

xymon: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2015-1430 being exploited?

CVE-2015-1430 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2015-1430 affect?

CVE-2015-1430 affects xymon. Severity is critical (CVSS 9.8). Buffer overflow in xymon 4.3.17-1.

How urgent is CVE-2015-1430?

Priority 56/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2019-13486 CRITICAL 9.8 UPGRADE MITIGATE In Xymon through 4.3.28, a stack-based buffer overflow exists in the status-log viewer component because of &n
CVE-2019-13485 CRITICAL 9.8 UPGRADE MITIGATE In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the history viewer component vi
CVE-2019-13484 CRITICAL 9.8 UPGRADE MITIGATE In Xymon through 4.3.28, a buffer overflow exists in the status-log viewer CGI because of   expansion in
CVE-2019-13455 CRITICAL 9.8 UPGRADE MITIGATE In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert acknowledgment CGI to
CVE-2019-13452 CRITICAL 9.8 UPGRADE MITIGATE In Xymon through 4.3.28, a buffer overflow vulnerability exists in reportlog.c.

References

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