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CVE-2021-33798

20
FAUCET Score

CVE-2021-33798 describes a null pointer dereference vulnerability in libpano13, specifically version 2.9.20. This flaw allows an unauthenticated attacker to trigger a denial of service and potentially execute arbitrary code by enticing a user to open a specially crafted file. Rated as MEDIUM severity with a CVSS score of 6.5, it requires user interaction and has a low attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
2.9.20CPE matchmatch criteria
cpe:2.3:a:libpano13_project:libpano13:2.9.20:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.48%
Probability of exploitation in next 30 days
EPSS Percentile
39.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0049 is in the 41st percentile among its peer group of 26,220 CVEs.

Social Chatter

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

groups.google.com / u/1/g/hugin-ptx/c/gLtz2vweD74
ExploitMailing ListThird Party Advisory
sourceforge.net / p/panotools/libpano13/ci/62aa7eed8fae5d8f247a2508a757f31000de386f
Patch