CVE-2021-46312

Exp

An issue was discovered IW44EncodeCodec.cpp in djvulibre 3.5.28 in allows attackers to cause a denial of service via divide by zero.

Published: 2023-08-22 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-46312 is rated High Exploit Risk (60.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.87%). 1 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-2021-46312

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

Exploit prediction scoring system (EPSS) score for CVE-2021-46312

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 0.26% 0.87% +0.61%
2 2026-04-19 0.24% 0.26% +0.02%
3 2026-02-02 — 0.24% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-46312

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
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.
 2.8 3.6 [email protected]

Weakness enumeration for CVE-2021-46312

OS Trackers for CVE-2021-46312

vendor priority summary link
alpine — CVE-2021-46312: 1 source package rows (djvulibre); 7 state rows across 5 repos (3.18-community, 3.19-community, 3.20-community, 3.22-community, edge-community); fixed 0, open 7. https://security.alpinelinux.org/vuln/CVE-2021-46312
debian not yet assigned CVE-2021-46312 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-2021-46312
suse medium CVE-2021-46312 severity moderate: SUSE including 14 source package names (djvulibre-3.5.27-150200.11.14.1, djvulibre-3.5.28-160000.2.2, …), 39 product×package rows across 20 product lines (SUSE Linux Enterprise Module for Desktop Applications 15 SP4, SUSE Linux Enterprise Module for Desktop Applications 15 SP5, … (20 product lines)): Fixed 39. https://www.suse.com/security/cve/CVE-2021-46312/
ubuntu low CVE-2021-46312 low priority: Ubuntu including 1 source packages (djvulibre), 12 status rows across 12 suites (bionic, focal, jammy, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): released 6, ignored 5, not-affected 1. https://ubuntu.com/security/CVE-2021-46312

Affected software / configurations for CVE-2021-46312

Vendor Product Version Raw CPE
djvulibre_project djvulibre 3.5.28 cpe:2.3:a:djvulibre_project:djvulibre:3.5.28:*:*:*:*:*:*:*

References for CVE-2021-46312

cvelogic Threat Intelligence