Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2020-12647

27
FAUCET Score

CVE-2020-12647 describes a vulnerability in specific versions of the Unisys ALGOL Compiler (58.1, 59.1, and 60.0) where rare syntax conditions can lead to the generation of invalid code sequences. This flaw, rated 8.8 HIGH (CVSSv3.1), has a local attack vector with low complexity, allowing an authenticated attacker to potentially trigger system faults and severely impact confidentiality, integrity, and availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 58.1, < 58.1a.15CPE matchmatch criteria
cpe:2.3:a:unisys:algol_compiler:*:*:*:*:*:*:*:*
>= 59.1, < 59.1a.9CPE matchmatch criteria
cpe:2.3:a:unisys:algol_compiler:*:*:*:*:*:*:*:*
>= 60.0, < 60.0a.5CPE matchmatch criteria
cpe:2.3:a:unisys:algol_compiler:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.0
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 71st percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

public.support.unisys.com / common/public/vulnerability/NVD_Detail_Rpt.aspx
Vendor Advisory