CVE-2021-35977: digi realport Classic Buffer Overflow
CVSS: 9.8v3.1CriticalModified
Published 08-10-2021Last modified 04-08-2024
Vulnerability summary
CVE-2021-35977 is a critical (CVSS 9.8) Classic Buffer Overflow vulnerability in digi realport. EPSS estimates a 1.58% chance of exploitation in the next 30 days, higher than 75% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
1.58%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 08-10-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in Digi RealPort for Windows through 4.8.488.0. A buffer overflow exists in the handling of ADDP discovery response messages. This could result in arbitrary code execution.
CVSS metrics
2 scores · 1 source · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.58%
Chance of exploitation in the next 30 days
Percentile
75%
Versus all other CVEs
30-day change
0.00 pp
From 1.58% on 18-09-2026
18-09-202618-10-2026
EPSS score1.58%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Digi1 product
- realport≤ 1.9-40 | ≤ 4.8.488.0
1 vendor · 1 product
References
1 links- raw.githubusercontent.com/reidmefirst/vuln-disclosure/main/2021-02.txtX Refsource MISCThird Party Advisory