What is CVE-2023-0077?

CVE-2023-0077 is a medium-severity vulnerability in Synology Router Manager, classified under CWE-190: INTEGER OVERFLOW OR WRAPAROUND. CVSS score: 6.5/10. Published 2023-01-05.

How severe is CVE-2023-0077?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Synology Router Manager

CVE-2023-0077

Integer overflow or wraparound vulnerability in CGI component in Synology Router Manager (SRM) before 1.2.5-8227-6 and 1.3.1-9346-3 allows remote attackers to overflow buffers via unspecified vectors.

Published 2023-01-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.010 (61.4th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 61.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.010 · change: +0.000

Affected products

Synology Router Manager
Synology Router Manager (Srm) — versions 1.2, 1.3

References

www.synology.com/en-global/security/advisory/Synology_SA_22_25 (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2023-0077?: CVE-2023-0077 is a medium-severity vulnerability in Synology Router Manager, classified under CWE-190: INTEGER OVERFLOW OR WRAPAROUND. CVSS score: 6.5/10. Published 2023-01-05.
How severe is CVE-2023-0077?: Medium severity. CVSS v3 base score is 6.5 out of 10.