How severe is CVE-2025-68471?

CVE-2025-68471 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-68471 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-68471?

CVE-2025-68471 primarily affects Avahi. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-68471?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-68471 have an EU (EUVD) identifier?

Yes. CVE-2025-68471 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206278.

When was CVE-2025-68471 published?

CVE-2025-68471 was published on 2026-01-12 and last updated on 2026-06-17.

CVE-2025-68471

CVE-2025-68471 is a medium-severity vulnerability in Avahi with a CVSS 3.x base score of 6.5. 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-617.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-206278
Weakness: CWE-617
Affected product: Avahi
Published: 2026-01-12
Last modified: 2026-06-17

Description

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, avahi-daemon can be crashed by sending 2 unsolicited announcements with CNAME resource records 2 seconds apart.

Frequently asked questions

What is CVE-2025-68471?: Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, avahi-daemon can be crashed by sending 2 unsolicited announcements with CNAME resource records 2 seconds apart.
How severe is CVE-2025-68471?: CVE-2025-68471 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-68471 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-68471?: CVE-2025-68471 primarily affects Avahi. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-68471?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-68471 have an EU (EUVD) identifier?: Yes. CVE-2025-68471 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206278.
When was CVE-2025-68471 published?: CVE-2025-68471 was published on 2026-01-12 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:avahi:avahi:*:*:*:*:*:*:*:*
cpe:2.3:a:avahi:avahi:0.9:rc1:*:*:*:*:*:*

More vulnerabilities in Avahi

CVE-2017-6519 — Critical (CVSS 9.1): avahi-daemon in Avahi through 0.6.32 and 0.7 inadvertently responds to IPv6 unicast queries with source addresses that…
CVE-2021-26720 — High (CVSS 7.8): avahi-daemon-check-dns.sh in the Debian avahi package through 0.8-4 is executed as root via…
CVE-2026-24401 — Medium (CVSS 6.5): Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In…
CVE-2025-68468 — Medium (CVSS 6.5): Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2…
CVE-2023-38473 — Medium (CVSS 6.2): A vulnerability was found in Avahi. A reachable assertion exists in the avahi_alternative_host_name() function.
CVE-2023-38472 — Medium (CVSS 6.2): A vulnerability was found in Avahi. A reachable assertion exists in the avahi_rdata_parse() function.

All CVEs affecting Avahi →

Other CWE-617 (Reachable Assertion) vulnerabilities

CVE-2020-3615 — Critical (CVSS 9.8): Valid deauth/disassoc frames is dropped in case if RMF is enabled and some rouge peer keep on sending rogue…
CVE-2019-9795 — Critical (CVSS 9.8): A vulnerability where type-confusion in the IonMonkey just-in-time (JIT) compiler could potentially be used by…
CVE-2026-31739 — High (CVSS 8.8): In the Linux kernel, the following vulnerability has been resolved: crypto: tegra - Add missing CRYPTO_ALG_ASYNC The…
CVE-2020-12417 — High (CVSS 8.8): Due to confusion about ValueTags on JavaScript Objects, an object may pass through the type barrier, resulting in…
CVE-2020-6623 — High (CVSS 8.8): stb stb_truetype.h through 1.22 has an assertion failure in stbtt__cff_get_index.
CVE-2020-6619 — High (CVSS 8.8): stb stb_truetype.h through 1.22 has an assertion failure in stbtt__buf_seek.

Browse all CWE-617 (Reachable Assertion) vulnerabilities →