HOME VULNERABILITIESCVE-2021-35516

HIGH

CVE-2021-35516

CWE-130Published: July 13, 2021· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

When reading a specially crafted 7Z archive, Compress can be made to allocate large amounts of memory that finally leads to an out of memory error even for very small inputs. This could be used to mount a denial of service attack against services that use Compress' sevenz package.

Technical Analysis

CVE-2021-35516 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Affected Vendors & Products

Apache1 product(s)

commons compress

netapp2 product(s)

active iq unified manageroncommand insight

Oracle21 product(s)

banking digital experiencebanking enterprise default managementbanking party managementbusiness process management suitecommerce guided searchcommunications billing and revenue managementcommunications cloud native core automated test suitecommunications cloud native core service communication proxycommunications cloud native core unified data repositorycommunications diameter intelligence hubcommunications session route managerfinancial services crime and compliance management studio+9

Source: NVD CPE · 45 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://www.oracle.com/security-alerts/cpuapr2022.html

PATCHhttps://www.oracle.com/security-alerts/cpujan2022.html

PATCHhttps://www.oracle.com/security-alerts/cpujul2022.html

PATCHhttps://www.oracle.com/security-alerts/cpuoct2021.html

PATCHhttps://www.oracle.com/security-alerts/cpuapr2022.html

PATCHhttps://www.oracle.com/security-alerts/cpujan2022.html

PATCHhttps://www.oracle.com/security-alerts/cpujul2022.html

PATCHhttps://www.oracle.com/security-alerts/cpuoct2021.html

ADVISORYhttp://www.openwall.com/lists/oss-security/2021/07/13/2

ADVISORYhttps://commons.apache.org/proper/commons-compress/security-reports.html

ADVISORYhttps://lists.apache.org/thread.html/rf68442d67eb166f4b6cf0bbbe6c7f99098c12954f37332073c9822ca%40%3Cuser.commons.apache.org%3E

ADVISORYhttps://security.netapp.com/advisory/ntap-20211022-0001/

ADVISORYhttp://www.openwall.com/lists/oss-security/2021/07/13/2

ADVISORYhttps://commons.apache.org/proper/commons-compress/security-reports.html

ADVISORYhttps://lists.apache.org/thread.html/rf68442d67eb166f4b6cf0bbbe6c7f99098c12954f37332073c9822ca%40%3Cuser.commons.apache.org%3E

ADVISORYhttps://security.netapp.com/advisory/ntap-20211022-0001/

All References (36)

→

http://www.openwall.com/lists/oss-security/2021/07/13/2Mailing List · Third Party Advisory

→

https://commons.apache.org/proper/commons-compress/security-reports.htmlVendor Advisory

→

https://lists.apache.org/thread.html/r67ef3c07fe3b8c1b02d48012149d280ad6da8e4cec253b527520fb2b%40%3Cdev.poi.apache.org%3E

→

https://lists.apache.org/thread.html/r9f54c0caa462267e0cc68b49f141e91432b36b23348d18c65bd0d040%40%3Cnotifications.skywalking.apache.org%3E

→

https://lists.apache.org/thread.html/racd0c0381c8404f298b226cd9db2eaae965b14c9c568224aa3f437ae%40%3Cnotifications.skywalking.apache.org%3E

→

https://lists.apache.org/thread.html/rb064d705fdfa44b5dae4c366b369ef6597951083196321773b983e71%40%3Ccommits.pulsar.apache.org%3E

→

https://lists.apache.org/thread.html/rb6e1fa80d34e5ada45f72655d84bfd90db0ca44ef19236a49198c88c%40%3Cnotifications.skywalking.apache.org%3E

→

https://lists.apache.org/thread.html/rb7adf3e55359819e77230b4586521e5c6874ce5ed93384bdc14d6aee%40%3Cnotifications.skywalking.apache.org%3E

→

https://lists.apache.org/thread.html/rba65ed5ddb0586f5b12598f55ec7db3633e7b7fede60466367fbf86a%40%3Cnotifications.skywalking.apache.org%3E

→

https://lists.apache.org/thread.html/rd4332baaf6debd03d60deb7ec93bee49e5fdbe958cb6800dff7fb00e%40%3Cnotifications.skywalking.apache.org%3E

→

https://lists.apache.org/thread.html/rf5b1016fb15b7118b9a5e16bb0b78cb4f1dfcf7821eb137ab5757c91%40%3Cannounce.apache.org%3E

→

https://lists.apache.org/thread.html/rf68442d67eb166f4b6cf0bbbe6c7f99098c12954f37332073c9822ca%40%3Cuser.commons.apache.org%3EMailing List · Vendor Advisory

→

https://lists.apache.org/thread.html/rfba19167efc785ad3561e7ef29f340d65ac8f0d897aed00e0731e742%40%3Cnotifications.skywalking.apache.org%3E

→

https://security.netapp.com/advisory/ntap-20211022-0001/Third Party Advisory

→

https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch · Third Party Advisory

Quick Facts

CVE IDCVE-2021-35516

CVSS Score7.5 / 10

SeverityHIGH

WeaknessCWE-130

CISA KEVNo

Affected3 vendor(s)

PublishedJul 13, 2021

Related CVEs (CWE-130)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2021-35516 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.

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