CVE-2025-8183: NULL Pointer Dereference in µD3TN via non-singleton destination Endpoint Identifier allows remote attacker to

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2025-8183 is a high-severity flaw (CVSS 7.5) affecting ud3tn. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

NULL Pointer Dereference in µD3TN via non-singleton destination Endpoint Identifier allows remote attacker to reliably cause DoS

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-476
Published	2025-07-25
Last modified	2026-06-17

Publisher (CNA): GitLab Inc. · Vendor: d3tn

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-07-25 10:15 UTCPublished CVE record published
2026-06-17 10:06 UTCUpdated Record last modified

d3tn ud3tn DOWNGRADE

Affected: 0.14.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.14.3

1. Check installed version

apt-cache policy ud3tn || rpm -q ud3tn || ud3tn --version

2. No fixed release: DOWNGRADE to a release before 0.14.3 (Debian / Ubuntu)

apt-cache madison ud3tn sudo apt install ud3tn=<VERSION_BEFORE_0.14.3> sudo apt-mark hold ud3tn

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ud3tn sudo dnf downgrade ud3tn-<VERSION_BEFORE_0.14.3> sudo dnf versionlock add ud3tn

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-8183?

ud3tn: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-8183 being exploited?

CVE-2025-8183 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-8183 affect?

CVE-2025-8183 affects ud3tn. Severity is high (CVSS 7.5). NULL Pointer Dereference in µD3TN via non-singleton destination Endpoint Identifier allows remote attacker to reliably cause DoS

How urgent is CVE-2025-8183?

Priority 48/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-12107 HIGH 7.5 DOWNGRADE Double-Free Vulnerability in uD3TN BPv7 Caused by Malformed Endpoint Identifier allows remote attacker to reli
CVE-2024-10455 HIGH 7.5 DOWNGRADE Reachable Assertion in BPv7 parser in µD3TN v0.14.0 allows attacker to disrupt service via malformed Extension

References

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