How severe is CVE-2021-3710?

CVE-2021-3710 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-3710 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3710?

CVE-2021-3710 primarily affects Canonical Apport. In total, 170 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-3710?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-3710 published?

CVE-2021-3710 was published on 2021-10-01 and last updated on 2026-06-17.

CVE-2021-3710

CVE-2021-3710 is a medium-severity vulnerability in Canonical Apport with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.7
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Canonical Apport
Published: 2021-10-01
Last modified: 2026-06-17

Description

An information disclosure via path traversal was discovered in apport/hookutils.py function read_file(). This issue affects: apport 2.14.1 versions prior to 2.14.1-0ubuntu3.29+esm8; 2.20.1 versions prior to 2.20.1-0ubuntu2.30+esm2; 2.20.9 versions prior to 2.20.9-0ubuntu7.26; 2.20.11 versions prior to 2.20.11-0ubuntu27.20; 2.20.11 versions prior to 2.20.11-0ubuntu65.3;

Frequently asked questions

What is CVE-2021-3710?: An information disclosure via path traversal was discovered in apport/hookutils.py function read_file(). This issue affects: apport 2.14.1 versions prior to 2.14.1-0ubuntu3.29+esm8; 2.20.1 versions prior to 2.20.1-0ubuntu2.30+esm2; 2.20.9 versions prior to 2.20.9-0ubuntu7.26; 2.20.11 versions prior to 2.20.11-0ubuntu27.20; 2.20.11 versions prior to 2.20.11-0ubuntu65.3;
How severe is CVE-2021-3710?: CVE-2021-3710 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-3710 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3710?: CVE-2021-3710 primarily affects Canonical Apport. In total, 170 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-3710?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-3710 published?: CVE-2021-3710 was published on 2021-10-01 and last updated on 2026-06-17.

References

Affected products (170)

cpe:2.3:a:canonical:apport:2.14.1-0ubuntu1:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu2:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.1:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.2:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.3:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.4:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.5:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.6:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.7:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.8:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.9:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.10:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.11:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.12:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.13:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.14:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.15:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.16:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.17:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.18:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.19:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.20:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.21:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.23:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.24:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.25:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.27:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.28:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.29:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.14.1-0ubuntu3.29\+esm7:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.1-0ubuntu1:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.1-0ubuntu2:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.1-0ubuntu2.1:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.1-0ubuntu2.2:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.1-0ubuntu2.4:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.1-0ubuntu2.5:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.1-0ubuntu2.6:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.1-0ubuntu2.7:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.1-0ubuntu2.8:*:*:*:*:*:*:*

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Threat intelligence

Threat-intel indicators referencing this CVE:

168.90.177.192 (ipv4-addr)