CVE-2025-30472
CVE-2025-30472 is a critical-severity vulnerability in Corosync with a CVSS 3.x base score of 9.0. 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-787.
Key facts
- Severity: Critical (CVSS 3.x base score 9.0)
- EPSS exploit prediction: 0% (35th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-7198
- Weakness: CWE-787
- Affected product: Corosync
- Published:
- Last modified:
Description
Corosync through 3.1.9, if encryption is disabled or the attacker knows the encryption key, has a stack-based buffer overflow in orf_token_endian_convert in exec/totemsrp.c via a large UDP packet.
Frequently asked questions
- What is CVE-2025-30472?
- Corosync through 3.1.9, if encryption is disabled or the attacker knows the encryption key, has a stack-based buffer overflow in orf_token_endian_convert in exec/totemsrp.c via a large UDP packet.
- How severe is CVE-2025-30472?
- CVE-2025-30472 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2025-30472 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-30472?
- CVE-2025-30472 affects Corosync. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-30472?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2025-30472 have an EU (EUVD) identifier?
- Yes. CVE-2025-30472 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7198.
- When was CVE-2025-30472 published?
- CVE-2025-30472 was published on 2025-03-22 and last updated on 2026-06-17.
References
- https://corosync.org
- https://github.com/corosync/corosync/blob/73ba225cc48ebb1903897c792065cb5e876613b0/exec/totemsrp.c#L4677
- https://github.com/corosync/corosync/issues/778
- https://lists.debian.org/debian-lts-announce/2025/09/msg00023.html
Affected products (1)
- cpe:2.3:a:corosync:corosync:*:*:*:*:*:*:*:*
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