Known exploited vulnerability
CVE-2021-30533
The short answer
CVE-2021-30533 affects Google Chrome and is rated medium (CVSS 6.5). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-06-27: attackers are using it, so patch it first. The vendor has linked a patch.
What it is
Insufficient policy enforcement in PopupBlocker in Google Chrome prior to 91.0.4472.77 allowed a remote attacker to bypass navigation restrictions via a crafted iframe.
Weakness: CWE-863.
Severity
6.5 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Exploited (CISA KEV)
Yes, since Jun 27, 2022
Federal due date Jul 18, 2022
EPSS, next 30 days
17%
Higher than 97% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- High
- Availability impact
- None
What CISA says to do
Apply updates per vendor instructions.
Affected products
Chrome. NVD's record lists the exact affected versions.
References
- chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html Release NotesVendor Advisory
- crbug.com/1145553 ExploitIssue TrackingPatchVendor Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/ Mailing ListRelease Notes
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/ Mailing ListRelease Notes
- security.gentoo.org/glsa/202107-06 Third Party Advisory
- chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html Release NotesVendor Advisory
- crbug.com/1145553 ExploitIssue TrackingPatchVendor Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/ Mailing ListRelease Notes
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/ Mailing ListRelease Notes
- security.gentoo.org/glsa/202107-06 Third Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30533 US Government Resource
Questions
Is CVE-2021-30533 being exploited?
Yes. CISA added CVE-2021-30533 to its Known Exploited Vulnerabilities catalog on 2022-06-27, with a federal remediation due date of 2022-07-18.
How do I fix CVE-2021-30533?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
Related
Latest CVEs this week
Critical and High CVEs from the last 7 days, with KEV and EPSS.
Exploited vulnerabilities by vendor
Every vendor in CISA's KEV catalog, with its count.
Google exploited vulnerabilities
Everything CISA lists as exploited for Google.
Vulnerability watch
A briefing and a fix pull request when an advisory hits your dependencies.
Know the day a CVE lands in your code
Connect a GitHub repository and ZeusQA checks its dependencies daily, briefs each advisory and opens the fix. Three test runs free, no card.