CVE-2020-35573

Name: CVE-2020-35573
Creator: NVD / NIST
Published: 2020-12-20T05:15:09.553+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.66%

Last modified Jun 17, 2026

CVE-2020-35573 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. srs2.c in PostSRSd before 1.10 allows remote attackers to cause a denial of service (CPU consumption) via a long timestamp tag in an SRS address.. EPSS estimates a 2.66% chance of exploitation in the next 30 days.

Description

srs2.c in PostSRSd before 1.10 allows remote attackers to cause a denial of service (CPU consumption) via a long timestamp tag in an SRS address.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

2.66%

83.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-834

Affected Software

Vendor	Product	Versions
Postsrsd Project	Postsrsd	< 1.10
Debian	Debian Linux	9.0

References

https://github.com/roehling/postsrsd/commit/4733fb11f6bec6524bb8518c5e1a699288c26bacPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00031.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202107-08Third Party Advisory
https://github.com/roehling/postsrsd/commit/4733fb11f6bec6524bb8518c5e1a699288c26bacPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00031.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202107-08Third Party Advisory

Timeline

Published: Dec 20, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-35573?

srs2.c in PostSRSd before 1.10 allows remote attackers to cause a denial of service (CPU consumption) via a long timestamp tag in an SRS address.

How severe is CVE-2020-35573?

CVE-2020-35573 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.66% probability of exploitation in the next 30 days.

How do I fix CVE-2020-35573?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-35573?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST