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CVE-2021-32977

23
FAUCET Score

CVE-2021-32977 is a high-severity cryptographic signature verification vulnerability affecting AVEVA System Platform versions 2017 through 2020 R2 P01. An authenticated attacker can exploit this flaw over the network with low complexity, potentially leading to full compromise of confidentiality, integrity, and availability. Despite its significant impact, there is currently no public exploit code available, nor is it listed on the CISA KEV catalog, indicating no active exploitation. Community discussion and media coverage for this CVE are also minimal.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2017, < 2020CPE matchmatch criteria
cpe:2.3:a:aveva:system_platform:*:*:*:*:*:*:*:*
2020CPE matchmatch criteria
cpe:2.3:a:aveva:system_platform:2020:-:*:*:*:*:*:*
2020CPE matchmatch criteria
cpe:2.3:a:aveva:system_platform:2020:r2:*:*:*:*:*:*
2020CPE matchmatch criteria
cpe:2.3:a:aveva:system_platform:2020:r2_p01:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.62%
Probability of exploitation in next 30 days
EPSS Percentile
45.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0062 is in the 24th percentile among its peer group of 5,537 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

aveva.com / content/dam/aveva/documents/support/cyber-security-updates/SecurityBulletin_AVEVA-2021-002.pdf
Vendor Advisory
cisa.gov / uscert/ics/advisories/icsa-21-180-05
Third Party AdvisoryUS Government Resource