No exploitation reportedFix available

CVE-2021-35515

No exploitation reported by the sources we read.

Published2021-07-13
WeaknessCWE-834 · CWE-835

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

When reading a specially crafted 7Z archive, the construction of the list of codecs that decompress an entry can result in an infinite loop. This could be used to mount a denial of service attack against services that use Compress' sevenz package.

Timeline

dates in UTC

2021-07-1308:15CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-35515?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-35515?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Oracle insurance policy administration

Branch	Affected	Fixed in	Source
11.0	= 11.0.2	no fix published	NVD
11.1	= 11.1.0	no fix published	NVD
11.2	= 11.2.8	no fix published	NVD
11.3	= 11.3.0	no fix published	NVD
11.3	= 11.3.1	no fix published	NVD

Oracle banking digital experience

Branch	Affected	Fixed in	Source
18.x	≥ 18.1, ≤ 18.3	no fix published	NVD
19.1	= 19.1	no fix published	NVD
20.1	= 20.1	no fix published	NVD
21.1	= 21.1	no fix published	NVD

Oracle primavera unifier

Branch	Affected	Fixed in	Source
17.x	≥ 17.7, ≤ 17.12	no fix published	NVD
18.8	= 18.8	no fix published	NVD
19.12	= 19.12	no fix published	NVD
20.12	= 20.12	no fix published	NVD

24 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
CNAweakness (CWE)CWE-834read 2026-10-23
NVDweakness (CWE)CWE-835read 2026-10-23
FIRST EPSSEPSS score11.6 %read 2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2021-07-13
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-35515?

Is CVE-2021-35515 actively exploited?

Active exploitation of CVE-2021-35515 has not been confirmed. Its EPSS score was 11.6% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-35515?

CVE-2021-35515 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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