CVE-2023-43615
published 2023-10-07CVE-2023-43615: Mbed TLS 2.x before 2.28.5 and 3.x before 3.5.0 has a Buffer Overflow.
PriorityP341high7.5CVSS 3.1
AVNACLPRNUINSUCHINAN
EPSS
0.78%
51.9th percentile
Mbed TLS 2.x before 2.28.5 and 3.x before 3.5.0 has a Buffer Overflow.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| arm | mbed_tls | >= 2.0.0 < 2.28.5 | 2.28.5 |
| debian | mbedtls | — | — |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| msrc | cbl2_hvloader_1.0.1-5_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
| trustedfirmware | mbed_tls | >= 3.0.0 < 3.5.0 | 3.5.0 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
osv7.5HIGH
vendor_debian7.5LOW
vendor_msrc7.5HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Microsoft
Mbed TLS 2.x before 2.28.5 and 3.x before 3.5.0 has a Buffer Overflow.
vendor_msrc·2023-10-10·CVSS 7.5
CVE-2023-43615 [HIGH] CWE-120 Mbed TLS 2.x before 2.28.5 and 3.x before 3.5.0 has a Buffer Overflow.
Mbed TLS 2.x before 2.28.5 and 3.x before 3.5.0 has a Buffer Overflow.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
MITRE: MITRE
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference
Debian
CVE-2023-43615: mbedtls - Mbed TLS 2.x before 2.28.5 and 3.x before 3.5.0 has a Buffer Overflow.
vendor_debian·2023·CVSS 7.5
CVE-2023-43615 [HIGH] CVE-2023-43615: mbedtls - Mbed TLS 2.x before 2.28.5 and 3.x before 3.5.0 has a Buffer Overflow.
Mbed TLS 2.x before 2.28.5 and 3.x before 3.5.0 has a Buffer Overflow.
Scope: local
bookworm: open
bullseye: open
forky: open
sid: open
trixie: open
VulDB
Mbed TLS up to 2.28.4/3.4.x buffer overflow (FEDORA-2023-5c6521d81d / EUVD-2023-48021)
vuldb·2026-06-06·CVSS 7.5
CVE-2023-43615 [HIGH] Mbed TLS up to 2.28.4/3.4.x buffer overflow (FEDORA-2023-5c6521d81d / EUVD-2023-48021)
A vulnerability categorized as critical has been discovered in Mbed TLS up to 2.28.4/3.4.x. Affected by this vulnerability is an unknown functionality. The manipulation results in buffer overflow.
This vulnerability is cataloged as CVE-2023-43615. The attack must originate from the local network. There is no exploit available.
It is advisable to upgrade the affected component.
OSV
CVE-2023-43615: Mbed TLS 2
osv·2023-10-07·CVSS 7.5
CVE-2023-43615 [HIGH] CVE-2023-43615: Mbed TLS 2
Mbed TLS 2.x before 2.28.5 and 3.x before 3.5.0 has a Buffer Overflow.
GHSA
GHSA-656f-g689-89jh: Mbed TLS 2
ghsa_unreviewed·2023-10-07
CVE-2023-43615 [HIGH] CWE-120 GHSA-656f-g689-89jh: Mbed TLS 2
Mbed TLS 2.x before 2.28.5 and 3.x before 3.5.0 has a Buffer Overflow.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BDSHAANRULB57GVS5B3DZHXL5KCC7OWQ/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GGRB5MO2KUJKYPMGXMIZH2WRH6QR5UZS/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O7SB7L6A56QZALDTOZ6O4X7PTC4I647R/https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2023-10-1/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BDSHAANRULB57GVS5B3DZHXL5KCC7OWQ/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GGRB5MO2KUJKYPMGXMIZH2WRH6QR5UZS/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O7SB7L6A56QZALDTOZ6O4X7PTC4I647R/https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2023-10-1/
2023-10-07
Published