CVE-2026-27689
CVE-2026-27689 is a high-severity vulnerability with a CVSS 3.x base score of 7.7. 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-606.
Key facts
- Severity: High (CVSS 3.x base score 7.7)
- EPSS exploit prediction: 1% (43rd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-10464
- Weakness: CWE-606
- Published:
- Last modified:
Description
Due to an uncontrolled resource consumption (Denial of Service) vulnerability, an authenticated attacker with regular user privileges and network access can repeatedly invoke a remote-enabled function module with an excessively large loop-control parameter. This triggers prolonged loop execution that consumes excessive system resources, potentially rendering the system unavailable. Successful exploitation results in a denial-of-service condition that impacts availability, while confidentiality and integrity remain unaffected.
Frequently asked questions
- What is CVE-2026-27689?
- Due to an uncontrolled resource consumption (Denial of Service) vulnerability, an authenticated attacker with regular user privileges and network access can repeatedly invoke a remote-enabled function module with an excessively large loop-control parameter. This triggers prolonged loop execution that consumes excessive system resources, potentially rendering the system unavailable. Successful exploitation results in a denial-of-service condition that impacts availability, while confidentiality and integrity remain unaffected.
- How severe is CVE-2026-27689?
- CVE-2026-27689 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2026-27689 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-27689?
- 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-2026-27689 have an EU (EUVD) identifier?
- Yes. CVE-2026-27689 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10464.
- When was CVE-2026-27689 published?
- CVE-2026-27689 was published on 2026-03-10 and last updated on 2026-06-17.
References
Other CWE-606 vulnerabilities
- CVE-2026-13761 — High (CVSS 8.8): Pega Platform versions 7.1.0 through 25.1.2 are affected by an improper validation of inputs that are used for loop…
- CVE-2026-20301 — High (CVSS 8.6): A vulnerability in the Extensible Messaging Client Protocol (XMCP), also referred to as the External Client protocol,…
- CVE-2026-85730 — High (CVSS 8.2): smol-toml is a small, fast, and correct TOML parser and serializer. Prior to 1.7.1, parse() can enter an infinite loop…
- CVE-2026-62901 — High (CVSS 7.5): Unchecked input for loop condition in .NET allows an unauthorized attacker to deny service over a network.
- CVE-2026-1519 — High (CVSS 7.5): If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume…
- CVE-2025-43801 — High (CVSS 7.5): Unchecked input for loop condition vulnerability in XML-RPC in Liferay Portal 7.4.0 through 7.4.3.111, and older…