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CVE-2021-22553

23
FAUCET Score

CVE-2021-22553 is a denial-of-service vulnerability affecting Google Gerrit servers, where repeated Git operations can lead to heap memory exhaustion due to unexpired and undisposed Jetty sessions. This high-severity vulnerability (CVSS 7.5) has a low attack complexity and requires no user interaction, allowing unauthenticated attackers to cause a complete loss of availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.15.22CPE matchmatch criteria
cpe:2.3:a:google:gerrit:*:*:*:*:*:*:*:*
>= 2.16.0, < 2.16.26CPE matchmatch criteria
cpe:2.3:a:google:gerrit:*:*:*:*:*:*:*:*
>= 3.0.0, < 3.0.16CPE matchmatch criteria
cpe:2.3:a:google:gerrit:*:*:*:*:*:*:*:*
>= 3.1.0, < 3.1.12CPE matchmatch criteria
cpe:2.3:a:google:gerrit:*:*:*:*:*:*:*:*
>= 3.2.0, < 3.2.7CPE matchmatch criteria
cpe:2.3:a:google:gerrit:*:*:*:*:*:*:*:*

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
0.36%
Probability of exploitation in next 30 days
EPSS Percentile
28.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0036 is in the 9th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

bugs.chromium.org / p/gerrit/issues/detail
Issue TrackingThird Party Advisory