CVE-2021-35940

lowpriority · track · 28EPSS 0.012 · 68 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.19% (68th) EPSS

CVSS 3.6 · low

Is it mine?

9 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · cert_bund · cisa_csaf_ot

EPSS · scored 2026-10-27

An out-of-bounds array read in the apr_time_exp*() functions was fixed in the Apache Portable Runtime 1.6.3 release (CVE-2017-12613). The fix for this issue was not carried forward to the APR 1.7.x branch, and hence version 1.7.0 regressed compared to 1.6.3 and is vulnerable to the same issue.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedFactoryTalk Edge Gatewaycisa_csaf_ot
Rockwell Automation encourages users of the affected software to apply the risk mitigation below, if possible. Additionally, they encourage users to implement their suggested security best practices to minimize the risk.

cvss

Technical severity, 0–10. One row per scoring source.

7.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 3.6–7.1

v2.03.6lowAV:L/AC:L/Au:N/C:P/I:N/A:Pprimary · NVD / NIST USexploitability 3.9 · impact 4.9

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.2

v3.07.1highCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Hsecondary · CISA US

v3.16.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125USprimaryCWE-125US

affected products (9)

Products and version ranges known to be affected.

Xerox FreeFlow Print Server 9all versionscert_bundDEcpe:/a:xerox:freeflow_print_server:9
Xerox FreeFlow Print Server v9 for Solarisall versionscert_bundDEcpe:/a:xerox:freeflow_print_server:v9_for_solaris
FactoryTalk Edge Gateway: v1.3all versionscisa_csaf_otUS
Rockwell Automation FactoryTalk Edge Gatewayall versionscisa_csaf_otUS
Apache Software Foundation Apache Portable Runtime (APR)≤ Apache Portable Runtime 1.7.0enisa_euvdEU
apache portable runtime= 1.7.0nvdUScpe:2.3:a:apache:portable_runtime:*:*:*:*:*:*:*:*
oracle http server= 12.2.1.3.0nvdUScpe:2.3:a:oracle:http_server:*:*:*:*:*:*:*:*
oracle http server= 12.2.1.4.0nvdUScpe:2.3:a:oracle:http_server:*:*:*:*:*:*:*:*
Bitnami apr1.7.0 → 1.7.1osvUSpkg:bitnami/apr

advisories (4)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-0064Apache Portable Runtime (APR): Schwachstelle ermöglicht Denial of ServiceDeutsch2021-08-24csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Apache Portable Runtime (APR) ausnutzen, um einen Denial of Service Angriff durchzuführen und vertrauliche Informationen offenzulegen.
WID-SEC-W-2023-1424Xerox FreeFlow Print Server für Solaris: Mehrere SchwachstellenDeutsch2023-06-12csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um die Vertraulichkeit, Verfügbarkeit und Integrität des Systems zu gefährden.
ICSA-23-164-03Rockwell Automation FactoryTalk Edge Gateway2023-06-13icsa · cisa_csaf_otUS
Successful exploitation of this vulnerability could allow a local user to cause the program to crash, causing a denial of service.
BIT-apr-2021-35940Regression of CVE-2017-126132024-03-06vendor · osvUS
An out-of-bounds array read in the apr_time_exp*() functions was fixed in the Apache Portable Runtime 1.6.3 release (CVE-2017-12613). The fix for this issue was not carried forward to the APR 1.7.x branch, and hence version 1.7.0 regressed compared to 1.6.3 and is vulnerable to the same issue.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund cisa_csaf_ot nvd osv NVD CVE.org MITRE

published 2021-08-23modified 2026-06-17

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+11867 more

references (57)

External citations — patches, advisories, analysis.

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