PatchTheCVECVE-2019-0211: Apache HTTP Server Privilege Escalation Vulnerability
87
Patch now
HIGH 7.8EXPLOITEDWATCHLISTUPGRADEMITIGATEMITIGATE
CVE-2019-0211 is a high-severity flaw (CVSS 7.8) affecting http server, fedora, ubuntu linux, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
In Apache HTTP Server 2.4 releases 2.4.17 to 2.4.38, with MPM event, worker or prefork, code executing in less-privileged child processes or threads (including scripts executed by an in-process scripting interpreter) could execute arbitrary code with the privileges of the parent process (usually root) by manipulating the scoreboard. Non-Unix systems are not affected.
Why this priority
- High severity
- EPSS top 1%: very likely to be exploited
- Exploited in the wild (CISA KEV)
- Public exploit reference
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.8 (High) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 65.0% (top 1%) |
| CISA exploited list | Yes, fix due 2022-05-03 |
| Weakness | CWE-416 |
| Published | 2019-04-08 |
| Last modified | 2026-06-17 |
Publisher (CNA): Apache Software Foundation · Vendor: apache · canonical · debian · fedoraproject · netapp · opensuse
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Exploited Added to the CISA Known Exploited Vulnerabilities list
- Deadline CISA due date for US federal agencies to patch
- Updated Record last modified
apache http server UPGRADE
Affected: >= 2.4.17 and <= 2.4.38
Fixed in: newer than 2.4.38
Safe to downgrade to: a release before 2.4.17
1. Check installed version
apt-cache policy http-server || rpm -q http-server || http-server --version
2. UPGRADE to newer than 2.4.38 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade http-server
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade http-server
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 2.4.17 (Debian / Ubuntu)
apt-cache madison http-server
sudo apt install http-server=<VERSION_BEFORE_2.4.17>
sudo apt-mark hold http-server
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list http-server
sudo dnf downgrade http-server-<VERSION_BEFORE_2.4.17>
sudo dnf versionlock add http-server
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
fedoraproject fedora MITIGATE
Affected: 28 · 29 · 30
Fixed in: no fixed release known
Safe to downgrade to: a release before 28
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
canonical ubuntu linux MITIGATE
Affected: 14.04 · 16.04 · 18.04 · 18.10
Fixed in: no fixed release known
Safe to downgrade to: a release before 14.04
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
debian debian linux MITIGATE
Affected: 9.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 9.0
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
opensuse leap MITIGATE
Affected: 15.0 · 42.3
Fixed in: no fixed release known
Safe to downgrade to: a release before 15.0
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
netapp oncommand unified manager MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy oncommand-unified-manager || rpm -q oncommand-unified-manager || oncommand-unified-manager --version
No fixed or unaffected release known
Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.
Exact fixes by distribution
A distro patch exists: prefer upgrading over downgrading.
Fedora 46 · nodejs-pnpm12 · FIXED · 12.17.0-1.fc46 · FEDORA-2026-7adfb2bcdd · source
sudo dnf upgrade --advisory=FEDORA-2026-7adfb2bcdd
Fedora ELN · wget2 · FIXED · 2.3.0-3.eln159 · FEDORA-2026-811b4922a5 · source
sudo dnf upgrade --advisory=FEDORA-2026-811b4922a5
Debian 12 · apache2 · FIXED · 2.4.38-3
sudo apt update && sudo apt install --only-upgrade apache2
dpkg --compare-versions "$(dpkg-query -W -f='${Version}' apache2)" ge "2.4.38-3" && echo PATCHED || echo STILL-VULNERABLE
Debian 13 · apache2 · FIXED · 2.4.38-3
sudo apt update && sudo apt install --only-upgrade apache2
dpkg --compare-versions "$(dpkg-query -W -f='${Version}' apache2)" ge "2.4.38-3" && echo PATCHED || echo STILL-VULNERABLE
RHEL 5 · httpd · NOT AFFECTED
RHEL 6 · httpd · NOT AFFECTED
RHEL 7 · httpd · NOT AFFECTED
Alpine 3.20 · apache2 · FIXED · apache2-2.4.39-r0
apk add --upgrade apache2
apk info -v apache2
Alpine 3.21 · apache2 · FIXED · apache2-2.4.39-r0
apk add --upgrade apache2
apk info -v apache2
Alpine 3.22 · apache2 · FIXED · apache2-2.4.39-r0
apk add --upgrade apache2
apk info -v apache2
Alpine 3.23 · apache2 · FIXED · apache2-2.4.39-r0
apk add --upgrade apache2
apk info -v apache2
sudo yum update --advisory=ALAS2-2019-1189
sudo yum update --advisory=ALAS-2019-1189
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- GitHub PoC: ozkanbilge/Apache-Exploit-2019 (11 stars)
- GitHub PoC: Jeanback1/CVE-2019-0211-exploit (0 stars)
- Write-up: hackerone.com/reports/520903
- Write-up: www.exploit-db.com/exploits/46676/
- Write-up: www.oracle.com/security-alerts/cpuapr2020.html
- Exploit-DB: Apache 2.4.17 < 2.4.38 - 'apache2ctl graceful' 'logrotate' Local Privilege Escalation
Verify at the official source NVD · CVE Program · CISA KEV catalog · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2019-0211?
http server: upgrade to newer than 2.4.38; fedora: mitigate or apply the listed mitigation; ubuntu linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2019-0211 being exploited?
Yes. CVE-2019-0211 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.
What does CVE-2019-0211 affect?
CVE-2019-0211 affects http server, fedora, ubuntu linux. Severity is high (CVSS 7.8). In Apache HTTP Server 2.4 releases 2.4.17 to 2.4.38, with MPM event, worker or prefork, code executing in less-privileged child processes or threads (including scripts executed by an in-process scripting interpreter) could execute arbitrary
How urgent is CVE-2019-0211?
Priority 87/100. High severity; EPSS top 1%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference; On your watchlist
Software pages
Apache HTTP Server vulnerabilities · Ubuntu vulnerabilities · Debian vulnerabilities
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