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CVE-2021-30045

28
FAUCET Score

CVE-2021-30045 is a critical buffer overflow vulnerability in the EndOfCentralDirectory::read() function of SerenityOS, affecting versions from March 27, 2021. With a CVSS score of 9.1, this vulnerability allows unauthenticated attackers to remotely execute arbitrary code with high impact on confidentiality and availability. There is currently no evidence of active exploitation, nor are there publicly available exploit modules or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2021-03-27CPE matchmatch criteria
cpe:2.3:o:serenityos:serenityos:2021-03-27:*:*:*:*:*:*:*

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:N/A:H

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

Exploit Intelligence

EPSS Score
1.82%
Probability of exploitation in next 30 days
EPSS Percentile
76.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0182 is in the 65th percentile among its peer group of 36,835 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 / SerenityOS/serenity/commit/4317db7498eaa5a37068052bb0310fbc6a5f78e4
PatchThird Party Advisory
github.com / SerenityOS/serenity/issues/5975
Third Party Advisory
github.com / SerenityOS/serenity/pull/5977
Third Party Advisory