CVE-2019-18804

Exp

DjVuLibre 3.5.27 has a NULL pointer dereference in the function DJVU::filter_fv at IW44EncodeCodec.cpp.

Published: 2019-11-07 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-18804 is rated High Exploit Risk (74.9/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.67%). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2019-18804

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2019-18804

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 4.58% 3.67% -0.91%
2 2025-12-28 2.51% 4.58% +2.07%
3 2025-12-27 — 2.51% —

Full EPSS history (25 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-18804

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2019-18804

OS Trackers for CVE-2019-18804

vendor priority summary link
debian not yet assigned CVE-2019-18804 not yet assigned priority: Debian including 1 source packages (djvulibre), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2019-18804
suse low CVE-2019-18804 severity low: SUSE including 34 source package names (djvulibre, djvulibre-3.5.27-3.8.1, …), 61 product×package rows across 38 product lines (HPE Helion OpenStack 8, SUSE Linux Enterprise Module for Desktop Applications 15, … (38 product lines)): Fixed 58, Known Not Affected 3. https://www.suse.com/security/cve/CVE-2019-18804/
ubuntu low CVE-2019-18804 low priority: Ubuntu including 1 source packages (djvulibre), 6 status rows across 6 suites (bionic, disco, eoan, trusty, upstream, xenial): released 4, DNE 1, needs-triage 1. https://ubuntu.com/security/CVE-2019-18804

Affected software / configurations for CVE-2019-18804

Vendor Product Version Raw CPE
djvulibre_project djvulibre 3.5.27 cpe:2.3:a:djvulibre_project:djvulibre:3.5.27:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
debian debian_linux 10.0 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
debian debian_linux 11.0 cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
fedoraproject fedora 30 cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
fedoraproject fedora 31 cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 19.04 cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
canonical ubuntu_linux 19.10 cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
opensuse leap 15.0 cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
opensuse leap 15.1 cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*

References for CVE-2019-18804

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00068.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00069.html Mailing List Third Party Advisory
https://github.com/TeamSeri0us/pocs/blob/master/djvulibre/DJVU__filter_fv%40IW44EncodeCodec.cpp_499-43___SEGV_UNKNOW.md Exploit Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/11/msg00004.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/05/msg00022.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JO65AWU7LEWNF6DDCZPRFTR2ZPP5XK6L/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYPWP5T7TSUNZV4UEIRRCTVWO6VBZWJV/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QUEME45HVGTMDOYODAZYQOGWSZ2CEFWZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SWT7E7BMWV5T33AMU6OGDPPTPIGCFFZF/
https://sourceforge.net/p/djvu/bugs/309/ Exploit Third Party Advisory
https://usn.ubuntu.com/4198-1/ Third Party Advisory
https://www.debian.org/security/2021/dsa-5032 Third Party Advisory
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