CVE-2025-65411: A NULL pointer dereference in the src/path.c component of GNU Unrtf v0.21.10 allows attackers to cause a Denia

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2025-65411 is a high-severity flaw (CVSS 7.5) affecting unrtf. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A NULL pointer dereference in the src/path.c component of GNU Unrtf v0.21.10 allows attackers to cause a Denial of Service (DoS) via injecting a crafted payload into the search_path parameter.

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 53%)
CISA exploited list	No
Weakness	CWE-476
Published	2025-12-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: unrtf project

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

Am I affected?

Timeline

2025-12-30 18:15 UTCPublished CVE record published
2026-06-17 09:55 UTCUpdated Record last modified

unrtf project unrtf DOWNGRADE

Affected: 0.21.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.21.10

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.21.10 (Debian / Ubuntu)

apt-cache madison unrtf sudo apt install unrtf=<VERSION_BEFORE_0.21.10> sudo apt-mark hold unrtf

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

dnf --showduplicates list unrtf sudo dnf downgrade unrtf-<VERSION_BEFORE_0.21.10> sudo dnf versionlock add unrtf

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-2025-65411?

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

Is CVE-2025-65411 being exploited?

CVE-2025-65411 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-2025-65411 affect?

CVE-2025-65411 affects unrtf. Severity is high (CVSS 7.5). A NULL pointer dereference in the src/path.c component of GNU Unrtf v0.21.10 allows attackers to cause a Denial of Service (DoS) via injecting a crafted payload into the search_path parameter.

How urgent is CVE-2025-65411?

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

Related CVEs

CVE-2025-65410 MEDIUM 6.2 DOWNGRADE A stack overflow in the src/main.c component of GNU Unrtf v0.21.10 allows attackers to cause a Denial of Servi

References

← Back to latest CVEs