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CVE-2021-21948

25
FAUCET Score

CVE-2021-21948 is a heap-based buffer overflow vulnerability in the readDatHeadVec function of AnyCubic Chitubox AnyCubic Plugin 1.0.0, affecting various Chitubox versions. This flaw allows an unauthenticated attacker to achieve high impact to confidentiality, integrity, and availability by tricking a user into opening a specially crafted GF file, as reflected by its CVSS score of 7.8 (HIGH). Despite its severity, there is no known active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
1.8.1CPE matchmatch criteria
cpe:2.3:a:chitubox:chitubox_basic:1.8.1:*:*:*:*:*:*:*
1.0.0CPE matchmatch criteria
cpe:2.3:a:anycubic:chitubox:1.0.0:*:*:*:*:anycubic:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.77%
Probability of exploitation in next 30 days
EPSS Percentile
51.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0077 is in the 48th percentile among its peer group of 11,617 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 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

talosintelligence.com / vulnerability_reports/TALOS-2021-1376
ExploitThird Party Advisory