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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-12490

36
FAUCET Score

When a provide-xfr is given with a tls-auth-name, a secondary requesting a transfer should provide a client certificate with that name. However, no client certificate is needed when the request comes in over TLS over the regular tls-port (and not the tls-auth-port) or over over TCP over the regular port, when the other conditions of the provide-xfr rule match.

First published: Jun 25, 2026Last modified: Jun 25, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 4.14.3CPE matchmatch criteria
cpe:2.3:a:nlnetlabs:nsd:*:*:*:*:*:*:*:*
>= 4.10.1, < 4.14.3CPE match
cpe:2.3:a:nlnetlabs:nsd:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

8.2HIGH

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.16%
Probability of exploitation in next 30 days
EPSS Percentile
5.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0016 is in the 0th percentile among its peer group of 51,485 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 (6)

ubuntupatch availablevia ubuntu_usn
Product: nsd (bionic)Fixed in: 4.1.17-1ubuntu0.1~esm1
ubuntupatch availablevia ubuntu_usn
Product: nsd (focal)Fixed in: 4.1.26-1ubuntu0.1~esm1
ubuntupatch availablevia ubuntu_usn
Product: nsd (jammy)Fixed in: 4.3.9-1ubuntu0.1~esm1
ubuntupatch availablevia ubuntu_usn
Product: nsd (noble)Fixed in: 4.8.0-1ubuntu0.1~esm1
ubuntupatch availablevia ubuntu_usn
Product: nsd (resolute)Fixed in: 4.14.0-1ubuntu0.1~esm1
ubuntupatch availablevia ubuntu_usn
Product: nsd (xenial)Fixed in: 4.1.7-1ubuntu0.1~esm1

Vendor Advisories (1)

ubuntuUSN-8474-1

NSD vulnerabilities

Jun 25, 2026

References

nlnetlabs.nl / downloads/nsd/CVE-2026-12490.txt
PatchVendor Advisory