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01 Record

CVE-2025-3756

Denial of Service Vulnerabilities in System 800xA, Symphony® Plus IEC 61850

HighPUBLISHEDCNA: ABB
CNA base score7.1 CVSS v4.0CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

02 Description

Denial of Service Vulnerabilities in System 800xA, Symphony® Plus IEC 61850

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.18% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 7.6% of scored records. A rank, not a probability.
NVD base score
7.1 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Deferred. NVD last modified this record on 2026-10-14.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-04-13 17:11Z6 MO AGO
Last updated
2026-04-13 18:03Z6 MO AGO
Reserved
2025-04-17
Assigning CNA
ABB
Record state
PUBLISHED
Severity
High (CVSS 7.1)
CNA CVSS vector
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weaknesses
  • CWE-1284Improper Validation of Specified Quantity in InputBase
Data version
5.2
Document digest
a2acae5d6a483accc1f4ff37768f4cb378ce0e1e7b9a8986caeb2ed5ce0ce0cc

05 Affected products

VendorProductVersionsPlatforms
ABBAC800M (System 800xA)6.0.0x to 6.0.0303.0, 6.1.0x to 6.1.0031.0, 6.1.1x to 6.1.1004.0, 6.1.1x to 6.1.1202.0, 6.2.0x to 6.2.0006.0—
ABBSymphony Plus SD SeriesA_0, A_1, A_2.003, A_3.005, A_4.001, B_0.005—
ABBS+ Operations2.1, 2.2, 2.3, 3.3—

06 References