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CVE-2020-29663

29
FAUCET Score

CVE-2020-29663 describes a critical vulnerability in Icinga 2 versions 2.8.0 through 2.11.7 and 2.12.2, where the system fails to honor Certificate Revocation Lists (CRLs), automatically renewing revoked certificates. This flaw carries a CVSS score of 9.1 (CRITICAL) due to its network-based attack vector, low attack complexity, and high impact on confidentiality and integrity. While there is no known active exploitation, public exploit code, or inclusion in the KEV catalog, the vulnerability has garnered significant community discussion, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.8.0, <= 2.11.7CPE matchmatch criteria
cpe:2.3:a:icinga:icinga:*:*:*:*:*:*:*:*
2.12.2CPE matchmatch criteria
cpe:2.3:a:icinga:icinga:2.12.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.55%
Probability of exploitation in next 30 days
EPSS Percentile
72.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0155 is in the 60th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / Icinga/icinga2/compare/v2.12.1...v2.12.2
PatchThird Party Advisory
github.com / Icinga/icinga2/security/advisories/GHSA-pcmr-2p2f-r7j6
Third Party Advisory