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CVE-2021-44204

24
FAUCET Score

CVE-2021-44204 is a local privilege escalation vulnerability affecting several Acronis Windows products, including Cyber Protect 15, Agent, Cyber Protect Home Office, and True Image 2021, due to improper access control on a named pipe. With a CVSS score of 7.8 (High), an attacker with low privileges can achieve full compromise of confidentiality, integrity, and availability on the local system. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
2021CPE matchmatch criteria
cpe:2.3:a:acronis:true_image:2021:*:*:*:*:-:*:*
2021CPE matchmatch criteria
cpe:2.3:a:acronis:true_image:2021:update_1:*:*:*:windows:*:*
2021CPE matchmatch criteria
cpe:2.3:a:acronis:true_image:2021:update_2:*:*:*:windows:*:*
2021CPE matchmatch criteria
cpe:2.3:a:acronis:true_image:2021:update_3:*:*:*:windows:*:*
2021CPE matchmatch criteria
cpe:2.3:a:acronis:true_image:2021:update_4:*:*:*:windows:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.20%
Probability of exploitation in next 30 days
EPSS Percentile
9.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0020 is in the 36th percentile among its peer group of 17,070 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

security-advisory.acronis.com / advisories/SEC-2355
Vendor Advisory