CVE-2018-0721: qnap systems inc. qts Classic Buffer Overflow
CVSS: 10.0v2.0HighModified
Published 27-11-2018Last modified 05-08-2024
Vulnerability summary
CVE-2018-0721 is a high (CVSS 10.0) Classic Buffer Overflow vulnerability in qnap systems inc. qts. EPSS estimates a 1.55% chance of exploitation in the next 30 days, higher than 74.7% of scored vulnerabilities.
CVSS score
10.0/10
010
High · v2.0 (NVD)EPSS score
1.55%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 27-11-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
Buffer Overflow vulnerability in NAS devices. QTS allows attackers to run arbitrary code. This issue affects: QNAP Systems Inc. QTS version 4.2.6 and prior versions on build 20180711; version 4.3.3 and prior versions on build 20180725; version 4.3.4 and prior versions on build 20180710.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 7.7Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:LSourcesAll 2 agree
- NVDNIST7.7HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:L
High 10.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
1.55%
Chance of exploitation in the next 30 days
Percentile
75%
Versus all other CVEs
30-day change
0.00 pp
From 1.55% on 19-09-2026
19-09-202619-10-2026
EPSS score1.55%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
- CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
Affected systems
Qnap1 product
- qts4.2.6 | 4.3.3 | 4.3.4
Qnap systems inc.1 product
- qts≥ unspecified, ≤ 4.2.6 | ≥ unspecified, ≤ 4.3.3 | ≥ unspecified, ≤ 4.3.4
2 vendors · 2 products