How severe is CVE-2013-3722?

CVE-2013-3722 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2013-3722 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-3722?

CVE-2013-3722 affects Opensips. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2013-3722?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2013-3722 published?

CVE-2013-3722 was published on 2020-02-17 and last updated on 2026-06-16.

CVE-2013-3722

CVE-2013-3722 is a high-severity vulnerability in Opensips with a CVSS 3.x base score of 7.5. 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-835.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-835
Affected product: Opensips
Published: 2020-02-17
Last modified: 2026-06-16

Description

A Denial of Service (infinite loop) exists in OpenSIPS before 1.10 in lookup.c.

Frequently asked questions

What is CVE-2013-3722?: A Denial of Service (infinite loop) exists in OpenSIPS before 1.10 in lookup.c.
How severe is CVE-2013-3722?: CVE-2013-3722 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2013-3722 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-3722?: CVE-2013-3722 affects Opensips. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2013-3722?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2013-3722 published?: CVE-2013-3722 was published on 2020-02-17 and last updated on 2026-06-16.

References

http://github.com/OpenSIPS/opensips/commit/54e027adfa486cfcf993828512b2e273aeb163c2

Affected products (1)

cpe:2.3:a:opensips:opensips:*:*:*:*:*:*:*:*

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