CVE-2020-27790

MEDIUM
5.5
CVSS Score
Published: August 18, 2022 at 06:57 PM UTC
Updated: June 17, 2026 at 03:09 AM UTC
1 product affected across 1 vendorUpx

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%

Description

A floating point exception issue was discovered in UPX in PackLinuxElf64::invert_pt_dynamic() function of p_lx_elf.cpp file. An attacker with a crafted input file could trigger this issue that could cause a crash leading to a denial of service. The highest impact is to Availability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.96
Vendor states this is fixed in 3.96 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

x_refsource_MISCExploitIssue TrackingPatchThird Party Advisory
https://github.com/upx/upx/issues/331

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-369

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