How severe is CVE-2021-32979?

CVE-2021-32979 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-2021-32979 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-2021-32979?

CVE-2021-32979 affects Aveva Suitelink. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-32979?

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-2021-32979 published?

CVE-2021-32979 was published on 2021-09-23 and last updated on 2026-06-17.

CVE-2021-32979

CVE-2021-32979 is a high-severity vulnerability in Aveva Suitelink 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-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Aveva Suitelink
Published: 2021-09-23
Last modified: 2026-06-17

Description

Null pointer dereference in SuiteLink server while processing commands 0x04/0x0a

Frequently asked questions

What is CVE-2021-32979?: Null pointer dereference in SuiteLink server while processing commands 0x04/0x0a
How severe is CVE-2021-32979?: CVE-2021-32979 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-2021-32979 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-2021-32979?: CVE-2021-32979 affects Aveva Suitelink. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-32979?: 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-2021-32979 published?: CVE-2021-32979 was published on 2021-09-23 and last updated on 2026-06-17.

References

https://www.aveva.com/content/dam/aveva/documents/support/cyber-security-updates/SecurityBulletin_AVEVA-2021-003.pdf

Affected products (1)

cpe:2.3:a:aveva:suitelink:*:*:*:*:*:*:*:*

More vulnerabilities in Aveva Suitelink

CVE-2021-32959 — High (CVSS 8.1): Heap-based buffer overflow in SuiteLink server while processing commands 0x05/0x06
CVE-2021-32999 — High (CVSS 7.5): Improper handling of exceptional conditions in SuiteLink server while processing command 0x01
CVE-2021-32987 — High (CVSS 7.5): Null pointer dereference in SuiteLink server while processing command 0x0b
CVE-2021-32971 — High (CVSS 7.5): Null pointer dereference in SuiteLink server while processing command 0x07
CVE-2021-32963 — High (CVSS 7.5): Null pointer dereference in SuiteLink server while processing commands 0x03/0x10

All CVEs affecting Aveva Suitelink →

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