CVE-2019-0211: Apache HTTP Server Privilege Escalation Vulnerability

KEV

Analyzed

AliasesALPINE-CVE-2019-0211UBUNTU-CVE-2019-0211DEBIAN-CVE-2019-0211

Published 08-04-2019Last modified 21-10-2025

Vulnerability summary

CVE-2019-0211 is a high (CVSS 7.8) Use After Free vulnerability in Apache HTTP Server. It is known to be exploited: CISA lists it, first on 03-11-2021. EPSS estimates a 65.00% chance of exploitation in the next 30 days, higher than 99.2% of scored vulnerabilities. 3 public exploits are recorded.

Priority

Act nowlisted as exploited

Listed as exploited by CISA (03-11-2021)

Source freshness unavailable

How is this decided?

CVSS score

7.8/10

010

High · v3.1 (CVE.org)

EPSS score

65.00%

0%100%

Critical · 0.00 pp in 30 days

KEVExploited in the wildCritical · listed in 1 catalog

RansomwareNot flaggedNo ransomware use recorded.

Public exploits3reference, exploit-database

Advisory lineage

Upstream 0 · Downstream 8 · Related 4

DSA-4422-1 OPENSUSE-SU-2019:1209-1 RHSA-2019:0746 RHSA-2019:0980 RHSA-2019:1297 SUSE-SU-2019:0873-1+2 more

Timeline

08-04-2019
PublishedVulnerability first disclosed.
03-11-2021
Added to CISA KEVExploitedApache HTTP Server Privilege Escalation Vulnerability
03-05-2022
CISA remediation dueDeadline passedApply updates per vendor instructions.
21-10-2025
Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

7 scores · 5 sources · 3 versions

v3.17.8v3.07.8v2.07.2

EPSS trend

Probability

65.00%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

No change 0.00 pp

From 65.00% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEVListed

Added: 03-11-2021
Federal due date: 03-05-2022

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

CISA required action

Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2019-0211

Public exploits

3 found

referenceUnverified
Exploit Reference (packetstormsecurity.com)
Maturity: unknown
referenceUnverified
Exploit Reference (packetstormsecurity.com)
Maturity: unknown
exploit-databaselocallinuxUnverified
Apache 2.4.17 < 2.4.38 - 'apache2ctl graceful' 'logrotate' Local Privilege Escalation
Maturity: poc

Weaknesses

CWE · root cause

CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat15 products

enterprise_linux8.0
enterprise_linux_eus8.1 | 8.2 | 8.4 | 8.6 | 8.8
enterprise_linux_for_arm_648.0_aarch64
enterprise_linux_for_arm_64_eus8.1_aarch64 | 8.2_aarch64 | 8.4_aarch64 | 8.6_aarch64 | 8.8_aarch64
enterprise_linux_for_ibm_z_systems8.0_s390x

Show all 15

Oracle6 products

communications_session_report_manager8.0.0 | 8.1.0 | 8.1.1 | 8.2.0
communications_session_route_manager8.0.0 | 8.1.0 | 8.1.1 | 8.2.0
enterprise_manager_ops_center12.3.3 | 12.4.0
http_server12.2.1.3.0
instantis_enterprisetrack17.1 | 17.2 | 17.3

Show all 6

Apache2 products

apache_http_server2.4.17 to 2.4.38
http_server≥ 2.4.17, ≤ 2.4.38

Debian2 products

apache2< 2.4.38-3
debian_linuxEOL9.0

Alpine1 product

apache2< 2.4.39-r0

Canonical1 product

ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 18.10

Fedoraproject1 product

fedoraEOL28 | 29 | 30

Netapp1 product

oncommand_unified_managerna

Opensuse1 product

leapEOL15.0 | 42.3

Ubuntu1 product

apache2< 2.4.18-2ubuntu3.10 | < 2.4.29-1ubuntu4.6

10 vendors · 31 products

References

60 links

www.openwall.com/lists/oss-security/2019/04/02/3Mailing ListX Refsource MLISTThird Party Advisory
www.securityfocus.com/bid/107666VDB EntryX Refsource BIDBroken LinkThird Party Advisory
seclists.org/bugtraq/2019/Apr/5Mailing ListX Refsource BUGTRAQThird Party Advisory
www.synology.com/security/advisory/Synology_SA_19_14X Refsource CONFIRMThird Party Advisory
packetstormsecurity.com/files/152386/Apache-2.4.38-Root-Privilege-Escalation.htmlX Refsource MISCThird Party AdvisoryVDB Entry
usn.ubuntu.com/3937-1/Vendor AdvisoryX Refsource UBUNTUThird Party Advisory
lists.fedoraproject.org/archives/…Vendor AdvisoryX Refsource FEDORARelease Notes
www.debian.org/security/2019/dsa-4422Vendor AdvisoryX Refsource DEBIANMailing ListThird Party Advisory
lists.apache.org/thread.html/…Mailing ListX Refsource MLIST
lists.fedoraproject.org/archives/…Vendor AdvisoryX Refsource FEDORARelease Notes

Show all 60 references

seclists.org/bugtraq/2019/Apr/16Mailing ListX Refsource BUGTRAQPatchThird Party Advisory
www.exploit-db.com/exploits/46676/ExploitX Refsource EXPLOIT DBThird Party AdvisoryVDB Entry
httpd.apache.org/security/vulnerabilities_24.htmlX Refsource MISCVendor Advisory
packetstormsecurity.com/files/152415/Slackware-Security-Advisory-httpd-Updates.htmlX Refsource MISCExploitThird Party AdvisoryVDB Entry
packetstormsecurity.com/files/152441/CARPE-DIEM-Apache-2.4.x-Local-Privilege-Escalation.htmlX Refsource MISCExploitThird Party AdvisoryVDB Entry
www.apache.org/dist/httpd/CHANGES_2.4.39X Refsource MISCBroken LinkVendor Advisory
lists.apache.org/thread.html/…Mailing ListX Refsource MLIST
lists.apache.org/thread.html/…Mailing ListX Refsource MLIST
access.redhat.com/errata/RHSA-2019:0746Vendor AdvisoryX Refsource REDHATThird Party Advisory
lists.opensuse.org/opensuse-security-announce/2019-04/msg00051.htmlVendor AdvisoryX Refsource SUSEBroken LinkMailing ListRelease NotesThird Party Advisory
lists.apache.org/thread.html/…Mailing ListX Refsource MLIST
support.f5.com/csp/article/K32957101X Refsource CONFIRMThird Party Advisory
lists.opensuse.org/opensuse-security-announce/2019-04/msg00061.htmlVendor AdvisoryX Refsource SUSEBroken LinkMailing ListRelease NotesThird Party Advisory
security.gentoo.org/glsa/201904-20Vendor AdvisoryX Refsource GENTOOThird Party Advisory
security.netapp.com/advisory/ntap-20190423-0001/X Refsource CONFIRMThird Party Advisory
lists.opensuse.org/opensuse-security-announce/2019-04/msg00084.htmlVendor AdvisoryX Refsource SUSEBroken LinkThird Party Advisory
access.redhat.com/errata/RHSA-2019:0980Vendor AdvisoryX Refsource REDHATThird Party Advisory
access.redhat.com/errata/RHBA-2019:0959Vendor AdvisoryX Refsource REDHATThird Party Advisory
lists.fedoraproject.org/archives/…Vendor AdvisoryX Refsource FEDORARelease Notes
access.redhat.com/errata/RHSA-2019:1297Vendor AdvisoryX Refsource REDHATThird Party Advisory
access.redhat.com/errata/RHSA-2019:1296Vendor AdvisoryX Refsource REDHATThird Party Advisory
lists.apache.org/thread.html/…Mailing ListX Refsource MLIST
access.redhat.com/errata/RHSA-2019:1543Vendor AdvisoryX Refsource REDHATThird Party Advisory
www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.htmlX Refsource MISCPatchThird Party Advisory
www.openwall.com/lists/oss-security/2019/07/26/7Mailing ListX Refsource MLIST
lists.apache.org/thread.html/…Mailing ListX Refsource MLIST
lists.apache.org/thread.html/…Mailing ListX Refsource MLIST
support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03950en_usX Refsource CONFIRMThird Party Advisory
www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.htmlX Refsource MISCPatchThird Party Advisory
lists.apache.org/thread.html/…Mailing ListX Refsource MLIST
lists.apache.org/thread.html/…Mailing ListX Refsource MLIST
lists.apache.org/thread.html/…Mailing ListX Refsource MLIST
www.oracle.com/security-alerts/cpuapr2020.htmlX Refsource MISCPatchThird Party Advisory
lists.apache.org/thread.html/…Mailing ListX Refsource MLIST
lists.apache.org/thread.html/…Mailing ListX Refsource MLIST
lists.apache.org/thread.html/…Mailing ListX Refsource MLIST
lists.apache.org/thread.html/…Mailing ListX Refsource MLIST
lists.apache.org/thread.html/…Mailing ListX Refsource MLIST
lists.apache.org/thread.html/…Mailing ListX Refsource MLISTPatch
lists.apache.org/thread.html/…Mailing ListX Refsource MLIST
lists.apache.org/thread.html/…Mailing ListX Refsource MLIST
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0211Government ResourceUS Government Resource
security.alpinelinux.org/vuln/CVE-2019-0211Advisory
ubuntu.com/security/CVE-2019-0211REPORT
httpd.apache.org/security/vulnerabilities_24.htmlREPORT
cfreal.github.io/carpe-diem-cve-2019-0211-apache-local-root.htmlREPORT
ubuntu.com/security/notices/USN-3937-1Advisory
www.cve.org/CVERecord?id=CVE-2019-0211REPORT
www.cisa.gov/known-exploited-vulnerabilities-catalogREPORT
security-tracker.debian.org/tracker/CVE-2019-0211Advisory