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Fencer Vulns
high 7.8

CVE-2019-15540 json

filters/filter-cso/filter-stream.c in the CSO filter in libMirage 3.2.2 in CDemu does not validate the part size, triggering a heap-based b…

published 2019-08-25 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-6523

cvss
7.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits
0
none known

Summary

filters/filter-cso/filter-stream.c in the CSO filter in libMirage 3.2.2 in CDemu does not validate the part size, triggering a heap-based buffer overflow that can lead to root access by a local Linux user.

Patch / fix

  • libmirage Package Hub 15 SP1, Package Hub 15 3.2.2-bp151.4.3.1
  • libmirage openSUSE Leap 15.0 3.2.2-lp150.2.3.1
  • libmirage openSUSE Leap 15.1 3.2.2-lp151.3.3.1

opensuse advisories openSUSE-SU-2019:2077-1openSUSE-SU-2019:2040-1openSUSE-SU-2019:2033-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-15540 updated cvss 5.9

libmirage: heap based buffer overflow in filters/filter-cso/filter-stream.c leads to privileged access

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.60% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • sourceforge.net https://sourceforge.net/p/cdemu/bugs/119/ referenced PoC, tagged "exploit" by a source, unverified
  • gist.github.com https://gist.github.com/andreafioraldi/baa79cd78131888d98d6ba680d5f514e referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.