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CVE-2020-24696

25
FAUCET Score

CVE-2020-24696 is a critical vulnerability affecting PowerDNS Authoritative versions up to 4.3.0 when the experimental GSS-TSIG feature is enabled. A remote, unauthenticated attacker can exploit a race condition by sending specially crafted GSS-TSIG queries, potentially leading to a denial of service or, in severe cases, arbitrary code execution. Rated with a CVSS score of 8.1 (HIGH), this vulnerability has a high impact on confidentiality, integrity, and availability, but requires high attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.3.0CPE matchmatch criteria
cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.36%
Probability of exploitation in next 30 days
EPSS Percentile
68.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0136 is in the 28th percentile among its peer group of 8,920 CVEs.

Social Chatter

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

Remediation

Remediation records are not available for this CVE.

References

doc.powerdns.com / authoritative/security-advisories/powerdns-advisory-2020-06.html
Vendor Advisory