Vulnerability · CVE-2021-33193
apache2 CVE-2021-33193
Published Unknown date · Alpine Alpine Linux
Check this week
CVE-2021-33193 is not in CISA KEV. FIRST estimates a 46.18% chance of exploitation in the next 30 days. Check whether you run Alpine Alpine Linux.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Unknown—
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 46.18%
- Remediation
- Vendor / distro source
- Affected products
- alpine apache2
CVE-2021-33193 is fixed in Alpine edge package apache2 2.4.49-r0 (main).
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- alpine apache22.4.49-r0
How to fix CVE-2021-33193
Recommended remediation
A vendor or distribution source is linked. Check that advisory for patch availability; this catalog does not invent fix status.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
CVE-2021-33193 is not in CISA KEV. FIRST estimates a 46.18% chance of exploitation in the next 30 days. Check whether you run Alpine Alpine Linux.
Which versions are affected?
Compare what you have installed with 2.4.49-r0. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 46.18%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Oct 17, 2026 · Alpine Linux Security
Detected
CVE-2021-33193 is fixed in Alpine edge package apache2 2.4.49-r0 (main).
Sources
- Alpine Linux SecurityPackage advisoryCVE-2021-33193
CVE-2021-33193 is fixed in Alpine edge package apache2 2.4.49-r0 (main).
security.alpinelinux.org - CVE.orgVulnerability recordCVE-2021-33193
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2021-33193
30-day exploitation probability 46.2%
first.org
Freshness
Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.