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CVE-2019-13484

31
FAUCET Score

CVE-2019-13484 describes a critical buffer overflow vulnerability in Xymon through version 4.3.28, specifically within the status-log viewer CGI due to improper handling of   expansion in appfeed.c. This vulnerability carries a CVSS score of 9.8 (Critical), indicating it can be exploited remotely without authentication or user interaction, leading to complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or publicly available exploit code in Metasploit, Nuclei, or ExploitDB, the vulnerability has garnered significant community discussion, suggesting awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.3.28CPE matchmatch criteria
cpe:2.3:a:xymon:xymon:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.85%
Probability of exploitation in next 30 days
EPSS Percentile
76.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0185 is in the 65th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / svn2github/xymon/blob/master/branches/4.3.28/web/appfeed.c
Third Party Advisory
lists.debian.org / debian-lts-announce/2019/08/msg00032.html
Mailing ListThird Party Advisory
lists.xymon.com / archive/2019-July/046570.html
Mailing ListRelease NotesVendor Advisory