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CVE-2025-48965

20
FAUCET Score

CVE-2025-48965 is a NULL pointer dereference vulnerability affecting Mbed TLS versions prior to 3.6.4. This flaw, stemming from conflicting data handling in mbedtls_asn1_store_named_data, could lead to a denial-of-service condition. Rated 7.5 HIGH on the CVSS scale, it is a network-exploitable vulnerability with low attack complexity and high impact on availability. Currently, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.6.4CPE matchmatch criteria
cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.0MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.2
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 16th percentile among its peer group of 51,551 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

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 (5)

ubuntupatch availablevia ubuntu_usn
Product: mbedtls (bionic)Fixed in: 2.8.0-1ubuntu0.1~esm1
ubuntupatch availablevia ubuntu_usn
Product: mbedtls (focal)Fixed in: 2.16.4-1ubuntu2+esm1
ubuntupatch availablevia ubuntu_usn
Product: mbedtls (jammy)Fixed in: 2.28.0-1ubuntu0.1~esm1
ubuntupatch availablevia ubuntu_usn
Product: mbedtls (noble)Fixed in: 2.28.8-1ubuntu0.1~esm1
github_advisoryworkaround availablevia nvd_reference
View patch

Vendor Advisories (1)

ubuntuUSN-8123-1

Mbed TLS vulnerabilities

Mar 25, 2026

References

lists.debian.org / debian-lts-announce/2025/08/msg00013.html
github.com / Mbed-TLS/mbedtls-docs/blob/main/security-advisories/mbedtls-security-advisory-2025-06-6.md
MitigationThird Party Advisory
mbed-tls.readthedocs.io / en/latest/tech-updates/security-advisories
Vendor Advisory