No exploitation reportedFix available

CVE-2024-23775

Q: Is CVE-2024-23775 actively exploited?

Active exploitation of CVE-2024-23775 has not been confirmed. Its EPSS score was 1.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2024-23775?

CVE-2024-23775 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2024-01-31
Fixed in2.28.7
WeaknessCWE-190

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Integer Overflow vulnerability in Mbed TLS 2.x before 2.28.7 and 3.x before 3.5.2, allows attackers to cause a denial of service (DoS) via mbedtls_x509_set_extension().

Timeline

dates in UTC

2024-01-3108:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2024-23775?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2024-23775?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Arm mbed tls

Branch	Affected	Fixed in	Source
2.x	≥ 2.0.0, < 2.28.7	2.28.7	NVD

Trustedfirmware mbed tls

Branch	Affected	Fixed in	Source
3.x	≥ 3.0.0, < 3.5.2	3.5.2	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Arm mbed tls to 2.28.7

Advisories and patches

mbed-tls.readthedocs.ioVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2025-05-08
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.17.52025-05-08
NVDCVSS 3.17.5read 2026-10-23
CISA-ADPweakness (CWE)CWE-1902025-05-08
NVDweakness (CWE)CWE-190read 2026-10-23
FIRST EPSSEPSS score1.1 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2024-01-31
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2024-23775?

Integer Overflow vulnerability in Mbed TLS 2.x before 2.28.7 and 3.x before 3.5.2, allows attackers to cause a denial of service (DoS) via mbedtls_x509_set_extension().

Is CVE-2024-23775 actively exploited?

Active exploitation of CVE-2024-23775 has not been confirmed. Its EPSS score was 1.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-23775?

CVE-2024-23775 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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