CVE-2020-11503: sophos sfos Out-of-bounds Write
CVSS: 9.8v3.1CriticalModified
Published 18-06-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-11503 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in sophos sfos. EPSS estimates a 1.44% chance of exploitation in the next 30 days, higher than 72.8% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
1.44%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 18-06-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A heap-based buffer overflow in the awarrensmtp component of Sophos XG Firewall v17.5 MR11 and older potentially allows an attacker to run arbitrary code remotely.
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
1.44%
Chance of exploitation in the next 30 days
Percentile
73%
Versus all other CVEs
30-day change
0.00 pp
From 1.44% on 19-09-2026
19-09-202619-10-2026
EPSS score1.44%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Sophos1 product
- sfos< 17.5 | 17.5 | 17.5:maintenance_release1 | 17.5:maintenance_release10 | 17.5:maintenance_release11 | 17.5:maintenance_release2 | 17.5:maintenance_release3 | 17.5:maintenance_release4 | 17.5:maintenance_release5 | 17.5:maintenance_release6 | 17.5:maintenance_release7 | 17.5:maintenance_release8 | 17.5:maintenance_release9
1 vendor · 1 product