CVE-2020-1934: apache apache_http_server Use of Uninitialized Resource
Vulnerability summary
CVE-2020-1934 is a medium (CVSS 5.3) Use of Uninitialized Resource vulnerability in apache apache_http_server. EPSS estimates a 51.95% chance of exploitation in the next 30 days, higher than 98.9% of scored vulnerabilities.
Not severe (CVSS 5.3, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 12 · Related 6Timeline
- 01-04-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
In Apache HTTP Server 2.4.0 to 2.4.41, mod_proxy_ftp may use uninitialized memory when proxying to a malicious FTP server.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- OSV · DebianEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS trend
Probability
51.95%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
No change 0.00 pp
From 51.95% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Oracle6 products
- communications_element_manager8.1.1 | 8.2.0 | 8.2.1
- communications_session_report_manager8.1.1 | 8.2.0 | 8.2.1
- communications_session_route_manager8.1.1 | 8.2.0 | 8.2.1
- enterprise_manager_ops_center12.4.0.0
- instantis_enterprisetrack≥ 17.1, ≤ 17.3
Apache2 products
- apache_http_server2.4.0 to 2.4.41
- http_server≥ 2.4.0, ≤ 2.4.41
Debian2 products
- apache2< 2.4.43-1
- debian_linuxEOL9.0 | 10.0
Alpine1 product
- apache2< 2.4.43-r0
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.04 | 20.04
Fedoraproject1 product
- fedoraEOL31 | 32
Opensuse1 product
- leapEOL15.1
Ubuntu1 product
- apache2All versions (No fix recorded) | < 2.4.18-2ubuntu3.17 | < 2.4.29-1ubuntu4.14 | < 2.4.41-4ubuntu3.1
8 vendors · 15 products
References
29 links- lists.opensuse.org/opensuse-security-announce/2020-05/msg00002.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
Show all 29 references
- lists.debian.org/debian-lts-announce/2021/07/msg00006.htmlMailing ListX Refsource MLISTThird Party Advisory