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CVE-2024-8948

21
FAUCET Score

CVE-2024-8948 is a critical heap-based buffer overflow vulnerability affecting MicroPython version 1.23.0, specifically within the mpz_as_bytes function when converting zero from an integer to bytes. This flaw can be exploited remotely with low attack complexity, potentially leading to a denial of service (DoS) due to the high impact on availability. While a patch (908ab1ceca15ee6fd0ef82ca4cba770a3ec41894) is available and recommended, there is currently no evidence of active exploitation, nor are there publicly available exploits in common frameworks or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.23.0CPE matchmatch criteria
cpe:2.3:a:micropython:micropython:1.23.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

6.9MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
LOW
VS Integrity
LOW
VS Availability
LOW
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.98%
Probability of exploitation in next 30 days
EPSS Percentile
58.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0098 is in the 34th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

pipGHSA-vh3x-525m-jp4rmedium

heap-buffer-overflow in MicroPython

Sep 17, 2024

References

github.com / micropython/micropython/commit/908ab1ceca15ee6fd0ef82ca4cba770a3ec41894
Patch
github.com / micropython/micropython/issues/13041
ExploitIssue TrackingThird Party Advisory
vuldb.com
Permissions Required
vuldb.com
Third Party Advisory
vuldb.com
Third Party Advisory