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Fencer Vulns
medium 6.5

CVE-2021-46310 json

An issue was discovered IW44Image.cpp in djvulibre 3.5.28 in allows attackers to cause a denial of service via divide by zero.

published 2023-08-22 3 y ago modified 2026-06-17 4 mo ago also EUVD-2021-32999

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

An issue was discovered IW44Image.cpp in djvulibre 3.5.28 in allows attackers to cause a denial of service via divide by zero.

Patch / fix

  • djvulibre Debian 12 3.5.28-2.2~deb12u1
  • djvulibre Debian 14, Debian 13 3.5.28-2.2

debian advisories DEBIAN-CVE-2021-46310

  • djvulibre SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 3.5.25.3-5.22.1
  • djvulibre SLE Module for Package Hub 15 SP5, SLE Module for Package Hub 15 SP4, SLE Module for Desktop Applications 15 SP5 +3 more 3.5.27-150200.11.14.1

suse advisories SUSE-SU-2023:3755-1SUSE-SU-2023:3520-1

  • djvulibre openSUSE Tumbleweed 3.5.28-6.1

opensuse advisories openSUSE-SU-2024:13178-1

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-2021-46310 updated cvss 5.3

djvulibre: divide by zero in IW44Image.cpp

  • 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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

1.03% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • sourceforge.net https://sourceforge.net/p/djvu/bugs/345/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

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.