CVE-2021-30500
HIGH
7.8
CVSS Score
Published: May 26, 2021 at 11:51 PM UTC
Updated: June 17, 2026 at 03:50 AM UTC
3 products affected across 3 vendorsFedoraEnterprise LinuxUpx
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Severity
HIGH7.8
Exploit prediction
EPSS 1%
Description
Null pointer dereference was found in upx PackLinuxElf::canUnpack() in p_lx_elf.cpp,in version UPX 4.0.0. That allow attackers to execute arbitrary code and cause a denial of service via a crafted file.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (3)
x_refsource_MISCIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1948692x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/upx/upx/commit/90279abdfcd235172eab99651043051188938dccx_refsource_MISCExploitIssue TrackingThird Party Advisory
Source: [email protected]
https://github.com/upx/upx/issues/485CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-476
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