CVE-2026-25657
CVE-2026-25657 is a medium-severity vulnerability in Ericsson Packet Core Gateway 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-228.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v4: 7.1
- EPSS exploit prediction: 0% (6th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-34821
- Weakness: CWE-228
- Affected product: Ericsson Packet Core Gateway
- Published:
- Last modified:
Description
Ericsson Packet Core Gateway (PCG) versions prior to 1.30 contain an Improper Handling of Syntactically Invalid Structure (CWE-228) vulnerability where an attacker continuously sending a specially crafted message can cause service degradation. The impact continues as long the attack persists but the system recovers from the crashes when the attack stops.
Frequently asked questions
- What is CVE-2026-25657?
- Ericsson Packet Core Gateway (PCG) versions prior to 1.30 contain an Improper Handling of Syntactically Invalid Structure (CWE-228) vulnerability where an attacker continuously sending a specially crafted message can cause service degradation. The impact continues as long the attack persists but the system recovers from the crashes when the attack stops.
- How severe is CVE-2026-25657?
- CVE-2026-25657 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2026-25657 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-25657?
- CVE-2026-25657 affects Ericsson Packet Core Gateway. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-25657?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-25657 have an EU (EUVD) identifier?
- Yes. CVE-2026-25657 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34821.
- When was CVE-2026-25657 published?
- CVE-2026-25657 was published on 2026-06-05 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:ericsson:packet_core_gateway:*:*:*:*:*:*:*:*
More vulnerabilities in Ericsson Packet Core Gateway
- CVE-2026-25659 — Medium (CVSS 6.5): Ericsson Packet Core Gateway (PCG) versions prior to 1.30 contain an Improper Handling of Missing Values (CWE-230)…
- CVE-2026-25658 — Medium (CVSS 6.5): Ericsson Packet Core Gateway (PCG) versions prior to 1.30 contain an Improper Handling of Missing Values (CWE-230)…
All CVEs affecting Ericsson Packet Core Gateway →
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