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Noroxi
NVD / CVE Program· CNA apache

CVE-2021-36374: Apache Ant ZIP, and ZIP based, archive denial of service vulerability

Noroxi assessment

Priority: Monitor (action score 23/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 2.6% (FIRST EPSS); higher than 85.6% of all records.
  • Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: apache-ant (Alpine:v3.14) 1.10.11-r0; ant (Debian:12) 1.10.11-1; org.apache.ant:ant (Maven) 1.10.11, 1.9.16.
  • Mentioned 2 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to apache-ant (Alpine:v3.14) 1.10.11-r0; ant (Debian:12) 1.10.11-1; org.apache.ant:ant (Maven) 1.10.11, 1.9.16 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

When reading a specially crafted ZIP archive, or a derived formats, an Apache Ant build can be made to allocate large amounts of memory that leads to an out of memory error, even for small inputs. This can be used to disrupt builds using Apache Ant. Commonly used derived formats from ZIP archives are for instance JAR files and many office files. Apache Ant prior to 1.9.16 and 1.10.11 were affected.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jul 14, 2021
Updated
Aug 25, 2026
EPSS
2.6% · 85th percentile

Report tools

JSON

Action score

23

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.6%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
apacheant
oracleagile engineering data management
oracleagile product lifecycle management
oraclebanking trade finance
oraclebanking treasury management
oraclecommunications cloud native core automated test suite
oraclecommunications cloud native core binding support function
oraclecommunications diameter intelligence hub
oraclecommunications order and service management
oraclecommunications unified inventory management
oracleenterprise repository
oraclefinancial services analytical applications infrastructure

and 24 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • apache ant1.9.0 and later · before 1.9.16
  • apache ant1.10.0 and later · before 1.10.11
  • oracle agile engineering data management6.2.1.0
  • oracle agile product lifecycle management9.3.6
  • oracle banking trade finance14.5
  • oracle banking treasury management14.5
  • oracle communications cloud native core automated test suite1.9.0
  • oracle communications cloud native core binding support function1.11.0
  • oracle communications diameter intelligence hub8.0.0 and later · up to 8.1.0 inclusive
  • oracle communications diameter intelligence hub8.2.0 and later · up to 8.2.3 inclusive
  • oracle communications order and service management7.3
  • oracle communications order and service management7.4
  • oracle communications unified inventory management7.3.0
  • oracle communications unified inventory management7.4.0
  • oracle communications unified inventory management7.4.1
  • oracle communications unified inventory management7.4.2
  • oracle communications unified inventory management7.5.0
  • oracle enterprise repository11.1.1.7.0
  • oracle financial services analytical applications infrastructure8.0.6 and later · up to 8.1.1 inclusive
  • oracle health sciences information manager3.0.1 and later · up to 3.0.5 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (apache). Independent of NVD's CPE analysis and usually ahead of it.

  • Apache Software Foundation Apache Ant

    • 1.4 and later · before Apache Ant*affected
    • Apache Ant 1.9.x and later · up to and including 1.9.15affected
    • Apache Ant 1.10.x and later · up to and including 1.10.10affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.14apache-antbefore 1.10.11-r01.10.11-r0
Debian:12antbefore 1.10.11-11.10.11-1
Mavenorg.apache.ant:antfrom 1.10.0 · before 1.10.111.10.11
Mavenorg.apache.ant:antfrom 1.9.0 · before 1.9.161.9.16
openSUSE:Leap 15.3antbefore 1.10.7-150200.4.6.11.10.7-150200.4.6.1
openSUSE:Leap 15.3ant-antlrbefore 1.10.7-150200.4.6.11.10.7-150200.4.6.1
openSUSE:Leap 15.3ant-junitbefore 1.10.7-150200.4.6.11.10.7-150200.4.6.1
openSUSE:Leap 15.3ant-junit5before 1.10.7-150200.4.6.11.10.7-150200.4.6.1
openSUSE:Leap 16.0antbefore 1.10.18-160000.1.11.10.18-160000.1.1
openSUSE:Leap 16.0ant-antlrbefore 1.10.18-160000.1.11.10.18-160000.1.1
openSUSE:Leap 16.0ant-junitbefore 1.10.18-160000.1.11.10.18-160000.1.1
openSUSE:Leap 16.0ant-junit5before 1.10.18-160000.1.11.10.18-160000.1.1
openSUSE:Tumbleweedantbefore 1.10.12-1.11.10.12-1.1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSapache-commons-digester3before 3.2-150200.5.3.53.2-150200.5.3.5
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSjson-simplebefore 2.3.1-150200.5.3.52.3.1-150200.5.3.5
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSmaven-doxiabefore 2.1.0-150200.4.21.152.1.0-150200.4.21.15
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSmaven-doxia-sitetoolsbefore 2.1.0-150200.3.23.172.1.0-150200.3.23.17
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSplexus-build-apibefore 1.2.0-150200.3.10.21.2.0-150200.3.10.2
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSplexus-i18nbefore 1.2.0-150200.3.10.21.2.0-150200.3.10.2
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSplexus-interactivitybefore 1.6.0-150200.3.10.21.6.0-150200.3.10.2
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSplexus-velocitybefore 2.4.0-150200.3.13.22.4.0-150200.3.13.2
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSvelocity-toolsbefore 3.2-150200.5.3.103.2-150200.5.3.10
SUSE:Linux Enterprise Module for Basesystem 15 SP7objectweb-asmbefore 9.10.1-150200.3.20.39.10.1-150200.3.20.3
SUSE:Linux Enterprise Module for Development Tools 15 SP3antbefore 1.10.7-150200.4.6.11.10.7-150200.4.6.1

+40

Same product

apache: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-11979As mitigation for CVE-2020-1945 Apache Ant 1.10.8 changed the permissions of temporary files it created so that only the current user was al
    32Monitor
  • CVE-2026-78254Apache Ant: Path traversal in ftp and scp tasks allows arbitrary file write
    29Monitor
  • CVE-2020-1945Apache Ant 1.1 to 1.9.14 and 1.10.0 to 1.10.7 uses the default temporary directory identified by the Java system property java.io.tmpdir for
    26Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2021-36373Jul 14, 2021 · Apache Ant TAR archive denial of service vulnerability
    23Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:apache-ant1.10.11-r0 · Alpine:v3.14Package registry (OSV)
debian:ant1.10.11-1 · Debian:12Package registry (OSV)
Maven:org.apache.ant:ant1.10.11Package registry (OSV)
Maven:org.apache.ant:ant1.9.16Package registry (OSV)
opensuse:ant1.10.7-150200.4.6.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:ant-antlr1.10.7-150200.4.6.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:ant-junit1.10.7-150200.4.6.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:ant-junit51.10.7-150200.4.6.1 · openSUSE:Leap 15.3Package registry (OSV)
suse:ant1.10.7-150200.4.6.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP3Package registry (OSV)
suse:ant1.9.4-3.9.1 · SUSE:Linux Enterprise Software Development Kit 12 SP5Package registry (OSV)
suse:ant-antlr1.10.7-150200.4.6.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP3Package registry (OSV)
suse:ant-antlr1.9.4-3.9.1 · SUSE:Linux Enterprise Software Development Kit 12 SP5Package registry (OSV)
suse:ant-contrib1.0b3-150200.11.17.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP7Package registry (OSV)
suse:ant-junit1.10.7-150200.4.6.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP3Package registry (OSV)
suse:ant-junit51.10.18-150200.4.31.3 · SUSE:Linux Enterprise Module for Development Tools 15 SP7Package registry (OSV)
suse:antlr2.7.7-150200.18.10.2 · SUSE:Linux Enterprise Module for Development Tools 15 SP7Package registry (OSV)
suse:assertj-core3.27.7-150200.5.11.8 · SUSE:Linux Enterprise Module for Development Tools 15 SP7Package registry (OSV)
suse:bsf2.4.0-150200.13.8.2 · SUSE:Linux Enterprise Module for Development Tools 15 SP7Package registry (OSV)
suse:byte-buddy1.18.8-150200.5.13.2 · SUSE:Linux Enterprise Module for Development Tools 15 SP7Package registry (OSV)
suse:jakarta-activation2.1.0-150200.5.7.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP7Package registry (OSV)
suse:jakarta-mail2.1.0-150200.5.7.2 · SUSE:Linux Enterprise Module for Development Tools 15 SP7Package registry (OSV)
suse:objectweb-asm9.10.1-150200.3.20.3 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-130 · Improper Handling of Length Parameter Inconsistency

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (10 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records