Home/CVE/Reachable Assertion vulnerability in upx before 4.0.0 allows attackers to cause a denial of service via crafted file pas
CVE

CVE-2021-46179

Reachable Assertion vulnerability in upx before 4.0.0 allows attackers to cause a denial of service via crafted file pas

Reachable Assertion vulnerability in upx before 4.0.0 allows attackers to cause a denial of service via crafted file passed to the readx function.

MEDIUM · CVSS 6.5 EPSS 0.00126
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-617Reachable Assertion
▤

Affected Products & Versions

1
upx< 4.0.0
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD22 Aug 2023 · 07:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/upx/upx/issues/545Issue TrackingPatch
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