Skip to main content

Product Directory Enterprise Compliance Pulse AI Analyst Compare Docs

Login Start Free

Loading...

Cloud security intelligence for modern infrastructure.

Stay informed

📬 Product updates & blog posts🛡️ CVE & vendor advisory alerts

Frequency:

Sent from noreply@echelongraph.io · Unsubscribe anytime

Product

Overview
Enterprise
Agents
AI Analyst
Pricing
Compare
vs. Competitors

Resources

CVE Pulse
Compliance Directory
Newsletter
Documentation
Readiness Calculator
Blog

Security Tools

Surface Scanner
AI Security Index
AI Threat Map
Shadow AI Radar
KEV-Exposure Radar
Exposed Data-Stores
Leaked Credentials
Shadow Engine Map

Company

Design Partners
Changelog
Contact
Responsible Disclosure

Legal

Privacy
Terms
Security
DPA

© 2026 EchelonGraph, Inc. All rights reserved.

SOC 2 Type IIISO 27001GDPRHIPAA Ready

Home›CVE Pulse›CVE-2021-28021

CVE-2021-28021

HIGHNVD 7.8EG7.8—

EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS

Sources: epss, ghsa, nvd

7.8

Buffer overflow vulnerability in function stbi__extend_receive in stb_image.h in stb 2.26 via a crafted JPEG file.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 40.5%
KEV: Not listed

Published

October 15, 2021

Last Modified

November 21, 2024

References (16)

cve@mitrehttps://github.com/nothings/stb/issues/1108
cve@mitrehttps://lists.debian.org/debian-lts-announce/2023/01/msg00045.html
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3TDGZFLBOP27LZKLH45WQLSNPSPP7S7Z/
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AF2CNP4FVC6LDKNOO4WDCGNDYIP3MPK6/
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEGXBDEMTFGINETMJENBZ6SCHVEJQJSY/
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G2M5CRSGPRF7G3YB5CLU4FXW7ANNHAYT/
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TXX76TJMZBPN3NU542MGN6B7C7QHRFGB/
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VP2YEXEAJWI76FPM7D7VXHWD3WESQEYC/
af854a3a-2127-422b-91ae-364da2661108https://github.com/nothings/stb/issues/1108
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/01/msg00045.html
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3TDGZFLBOP27LZKLH45WQLSNPSPP7S7Z/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AF2CNP4FVC6LDKNOO4WDCGNDYIP3MPK6/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEGXBDEMTFGINETMJENBZ6SCHVEJQJSY/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G2M5CRSGPRF7G3YB5CLU4FXW7ANNHAYT/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TXX76TJMZBPN3NU542MGN6B7C7QHRFGB/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-787Out-of-bounds Write

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore

Frequently asked(5)

What is CVE-2021-28021?

CVE-2021-28021 is a high vulnerability published on October 15, 2021. Buffer overflow vulnerability in function stbiextendreceive in stbimage.h in stb 2.26 via a crafted JPEG file.

When was CVE-2021-28021 disclosed?

CVE-2021-28021 was first published in the National Vulnerability Database on October 15, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-28021 actively exploited?

CVE-2021-28021 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 40.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-28021?

CVE-2021-28021 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2021-28021?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-28021, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-28021

Is Your Infrastructure Affected by CVE-2021-28021?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

Related CVEs(same CWE)

Same CWE

10 shown

CWE-787

CVE-2007-0158EG 9.8CRITICAL
CVE-2007-0899EG 9.8CRITICAL
CVE-2011-2462EG 9.8 KEVEPSS 100%CRITICAL
CVE-2010-20115EG 9.3EPSS 98%CRITICAL
CVE-2010-4398NVD 7.8EG 9.0 KEVEPSS 92%HIGH
CVE-2010-3333NVD 7.8EG 9.0 KEVEPSS 100%HIGH
CVE-2010-2883NVD 7.3EG 9.0 KEVEPSS 100%HIGH
CVE-2010-1297NVD 7.8EG 9.0 KEVEPSS 100%HIGH
CVE-2009-3953NVD 8.8EG 9.0 KEVEPSS 100%HIGH
CVE-2009-3129NVD 7.8EG 9.0 KEVEPSS 100%HIGH