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CVE-2020-8432

31
FAUCET Score

CVE-2020-8432 is a critical double free vulnerability in Das U-Boot through version 2020.01, specifically within the do_rename_gpt_parts() function, affecting products like Denx U-Boot and OpenSUSE U-Boot. This flaw, introduced during a memory leak fix attempt, carries a CVSS score of 9.8 (CRITICAL) due to its network-exploitable nature with low attack complexity, potentially leading to arbitrary code execution. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2020.01CPE matchmatch criteria
cpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:*
15.2CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.60%
Probability of exploitation in next 30 days
EPSS Percentile
88.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0360 is in the 81st percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.opensuse.org / opensuse-security-announce/2020-11/msg00030.html
Mailing ListThird Party Advisory
mail-archive.com / u-boot%40lists.denx.de/msg354060.html
mail-archive.com / u-boot%40lists.denx.de/msg354114.html