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CVE-2021-35515

30
FAUCET Score

CVE-2021-35515 is a denial-of-service vulnerability affecting services utilizing the Compress sevenz package, including products from Apache, NetApp, and Oracle. An attacker can trigger an infinite loop by providing a specially crafted 7Z archive, leading to service disruption. With a CVSS score of 7.5 (High), this vulnerability is remotely exploitable with low attack complexity and no user interaction required. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.6, <= 1.20CPE matchmatch criteria
cpe:2.3:a:apache:commons_compress:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:linux:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
11.57%
Probability of exploitation in next 30 days
EPSS Percentile
95.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1157 is in the 93rd percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

mavenpatch availablevia ghsa
Product: org.apache.commons:commons-compressFixed in: 1.21
oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Fuse 7.11Fixed in: apache-commons-compress
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization Engine 4.4Fixed in: apache-commons-compress-0:1.21-1.2.el8ev
View patch
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-maven36-apache-commons-compress
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: apache-commons-compress
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: eclipse:rhel8/apache-commons-compress
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: javapackages-tools:201801/apache-commons-compress

Vendor Advisories (2)

mavenGHSA-7hfm-57qf-j43qhigh

Excessive Iteration in Compress

Aug 2, 2021
redhatCVE-2021-35515Moderate

apache-commons-compress: infinite loop when reading a specially crafted 7Z archive

Jul 13, 2021

References

commons.apache.org / proper/commons-compress/security-reports.html
Vendor Advisory
lists.apache.org / thread.html/r19ebfd71770ec0617a9ea180e321ef927b3fefb4c81ec5d1902d20ab%40%3Cuser.commons.apache.org%3E
Vendor Advisory
lists.apache.org / thread.html/r67ef3c07fe3b8c1b02d48012149d280ad6da8e4cec253b527520fb2b%40%3Cdev.poi.apache.org%3E
lists.apache.org / thread.html/r9f54c0caa462267e0cc68b49f141e91432b36b23348d18c65bd0d040%40%3Cnotifications.skywalking.apache.org%3E
lists.apache.org / thread.html/rab292091eadd1ecc63c516e9541a7f241091cf2e652b8185a6059945%40%3Ccommits.druid.apache.org%3E
lists.apache.org / thread.html/racd0c0381c8404f298b226cd9db2eaae965b14c9c568224aa3f437ae%40%3Cnotifications.skywalking.apache.org%3E
lists.apache.org / thread.html/rb064d705fdfa44b5dae4c366b369ef6597951083196321773b983e71%40%3Ccommits.pulsar.apache.org%3E
lists.apache.org / thread.html/rb6e1fa80d34e5ada45f72655d84bfd90db0ca44ef19236a49198c88c%40%3Cnotifications.skywalking.apache.org%3E
lists.apache.org / thread.html/rb7adf3e55359819e77230b4586521e5c6874ce5ed93384bdc14d6aee%40%3Cnotifications.skywalking.apache.org%3E
lists.apache.org / thread.html/rba65ed5ddb0586f5b12598f55ec7db3633e7b7fede60466367fbf86a%40%3Cnotifications.skywalking.apache.org%3E
lists.apache.org / thread.html/rbaea15ddc5a7c0c6b66660f1d6403b28595e2561bb283eade7d7cd69%40%3Cannounce.apache.org%3E
lists.apache.org / thread.html/rbe91c512c5385181149ab087b6c909825d34299f5c491c6482a2ed57%40%3Ccommits.druid.apache.org%3E
lists.apache.org / thread.html/rd4332baaf6debd03d60deb7ec93bee49e5fdbe958cb6800dff7fb00e%40%3Cnotifications.skywalking.apache.org%3E
lists.apache.org / thread.html/rf2f4d7940371a7c7c5b679f50e28fc7fcc82cd00670ced87e013ac88%40%3Ccommits.druid.apache.org%3E
lists.apache.org / thread.html/rfba19167efc785ad3561e7ef29f340d65ac8f0d897aed00e0731e742%40%3Cnotifications.skywalking.apache.org%3E
security.netapp.com / advisory/ntap-20211022-0001
Third Party Advisory
oracle.com / security-alerts/cpuapr2022.html
PatchThird Party Advisory
oracle.com / security-alerts/cpujan2022.html
PatchThird Party Advisory
oracle.com / security-alerts/cpujul2022.html
PatchThird Party Advisory
oracle.com / security-alerts/cpuoct2021.html
PatchThird Party Advisory
openwall.com / lists/oss-security/2021/07/13/1
Mailing ListThird Party Advisory