CVE-2018-1285

Apache log4net versions before 2.0.10 do not disable XML external entities when parsing log4net configuration files. This allows for XXE-based attacks in applications that accept attacker-controlled log4net configuration files.

Published: 2020-05-11 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-1285 is rated High Risk (68.8/100): CVSS Critical severity, with high exploitation likelihood (EPSS 49.84%, 99th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-1285

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 67.33% 49.84% -17.49%
2 2026-06-06 65.58% 67.33% +1.75%
3 2026-05-23 — 65.58% —

Full EPSS history (34 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-1285

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2018-1285

GitHub Security Advisory for CVE-2018-1285

GHSA-2cwj-8chv-9pp9 · Severity: critical · Ecosystem: nuget — XML External Entity attack in log4net

OS Trackers for CVE-2018-1285

vendor priority summary link
debian low CVE-2018-1285 low priority: Debian including 1 source packages (log4net), 3 status rows across 3 suites (bullseye, sid, trixie): resolved 3. https://security-tracker.debian.org/tracker/CVE-2018-1285
suse medium CVE-2018-1285 severity moderate: SUSE including 2 source package names (log4net-1.2.10-3.3.1, log4net-1.2.10-78.1), 2 product×package rows across 2 product lines (SUSE Linux Enterprise Server 11 SP3-TERADATA, openSUSE Tumbleweed): Fixed 2. https://www.suse.com/security/cve/CVE-2018-1285/
ubuntu medium CVE-2018-1285 medium priority: Ubuntu including 1 source packages (log4net), 17 status rows across 17 suites (bionic, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 6, released 5, ignored 4, DNE 1, needed 1. https://ubuntu.com/security/CVE-2018-1285

Affected software / configurations for CVE-2018-1285

Vendor Product Version Raw CPE
apache log4net < 2.0.10 cpe:2.3:a:apache:log4net:*:*:*:*:*:*:*:*
fedoraproject fedora 30 cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
fedoraproject fedora 31 cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
fedoraproject fedora 32 cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
oracle application_testing_suite 13.3.0.1 cpe:2.3:a:oracle:application_testing_suite:13.3.0.1:*:*:*:*:*:*:*
oracle hospitality_opera_5 5.5 cpe:2.3:a:oracle:hospitality_opera_5:5.5:*:*:*:*:*:*:*
oracle hospitality_opera_5 5.6 cpe:2.3:a:oracle:hospitality_opera_5:5.6:*:*:*:*:*:*:*
oracle hospitality_simphony 18.2.7.2 cpe:2.3:a:oracle:hospitality_simphony:18.2.7.2:*:*:*:*:*:*:*
oracle hospitality_simphony 19.1.3 cpe:2.3:a:oracle:hospitality_simphony:19.1.3:*:*:*:*:*:*:*
netapp manageability_software_development_kit — cpe:2.3:a:netapp:manageability_software_development_kit:-:*:*:*:*:*:*:*
netapp snapcenter — cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*

References for CVE-2018-1285

URL Tags
https://issues.apache.org/jira/browse/LOG4NET-575 Issue Tracking Vendor Advisory
https://lists.apache.org/thread.html/r00b16ac5e0bbf7009a0d167ed58f3f94d0033b0f4b3e3d5025cc4872%40%3Cdev.logging.apache.org%3E
https://lists.apache.org/thread.html/r33564de316d4e4ba0fea1d4d079e62cde1ffe64369c1157243d840d9%40%3Cdev.logging.apache.org%3E
https://lists.apache.org/thread.html/r525cbbd7db0aef4a114cf60de8439aa285decc34904d42a7f14f39c3%40%3Cdev.logging.apache.org%3E
https://lists.apache.org/thread.html/r6543acafca3e2d24ff4b0c364a91540cb9378977ffa8d37a03ab4b0f%40%3Cdev.logging.apache.org%3E
https://lists.apache.org/thread.html/r7ab6b6e702f11a6f77b0db2af2d5e5532f56ae4b99b5fe73c5200b6a%40%3Cdev.logging.apache.org%3E
https://lists.apache.org/thread.html/r9de86a185575e6c5f92e2a70a1d2e2e9514dc4341251577aac8e3866%40%3Cdev.logging.apache.org%3E
https://lists.apache.org/thread.html/rd2d72a017e238d1f345f9d14e075c81be16fc68a41c9e9ad9e29a732%40%3Cdev.logging.apache.org%3E
https://lists.apache.org/thread.html/rdbac24c945ca5c69cd5348b5ac023bc625768f653335de146e09ae2d%40%3Cdev.logging.apache.org%3E
https://lists.apache.org/thread.html/reab1c277c95310bad1038255e0757857b2fbe291411b4fa84552028a%40%3Cdev.logging.apache.org%3E Mailing List Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M2U233HVAQDSZ2PRG4XSGDASLY3J6ALH/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VKL2LPINAI6BCMXOH4V4HVHGLUXIWOFO/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VT2DNNSW7C7FNK3MA3SLEUHGW5USYZKE/
https://security.netapp.com/advisory/ntap-20220909-0001/ Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2021.html Third Party Advisory
cvelogic Threat Intelligence