CVE-2021-22277
CVE-2021-22277 is a high-severity vulnerability in Abb 800xa with a CVSS 3.x base score of 7.5. 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-20.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 7.8
- EPSS exploit prediction: 1% (56th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-20
- Affected product: Abb 800xa
- Published:
- Last modified:
Description
Improper Input Validation vulnerability in ABB 800xA, Control Software for AC 800M, Control Builder Safe, Compact Product Suite - Control and I/O, ABB Base Software for SoftControl allows an attacker to cause the denial of service.
Frequently asked questions
- What is CVE-2021-22277?
- Improper Input Validation vulnerability in ABB 800xA, Control Software for AC 800M, Control Builder Safe, Compact Product Suite - Control and I/O, ABB Base Software for SoftControl allows an attacker to cause the denial of service.
- How severe is CVE-2021-22277?
- CVE-2021-22277 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2021-22277 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-22277?
- CVE-2021-22277 primarily affects Abb 800xa. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2021-22277?
- 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.
- When was CVE-2021-22277 published?
- CVE-2021-22277 was published on 2022-04-01 and last updated on 2026-06-17.
References
Affected products (4)
- cpe:2.3:a:abb:800xa:*:*:*:*:*:*:ac_800m:*
- cpe:2.3:a:abb:base_software:*:*:*:*:*:softcontrol:*:*
- cpe:2.3:a:abb:compact_product_suite:*:*:*:*:*:*:*:*
- cpe:2.3:a:abb:control_builder_safe:*:*:*:*:*:*:*:*
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