How severe is CVE-2025-49809?

CVE-2025-49809 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-49809 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-49809?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-49809 have an EU (EUVD) identifier?

Yes. CVE-2025-49809 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-20020.

When was CVE-2025-49809 published?

CVE-2025-49809 was published on 2025-07-04 and last updated on 2026-06-17.

CVE-2025-49809

CVE-2025-49809 is a high-severity vulnerability with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-829.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-20020
Weakness: CWE-829
Published: 2025-07-04
Last modified: 2026-06-17

Description

mtr through 0.95, in certain privileged contexts, mishandles execution of a program specified by the MTR_PACKET environment variable. NOTE: mtr on macOS may often have Sudo rules, as an indirect consequence of Homebrew not installing setuid binaries.

Frequently asked questions

What is CVE-2025-49809?: mtr through 0.95, in certain privileged contexts, mishandles execution of a program specified by the MTR_PACKET environment variable. NOTE: mtr on macOS may often have Sudo rules, as an indirect consequence of Homebrew not installing setuid binaries.
How severe is CVE-2025-49809?: CVE-2025-49809 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-49809 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-49809?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-49809 have an EU (EUVD) identifier?: Yes. CVE-2025-49809 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-20020.
When was CVE-2025-49809 published?: CVE-2025-49809 was published on 2025-07-04 and last updated on 2026-06-17.

References

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