CVE-2021-35945: couchbase couchbase_server Classic Buffer Overflow
CVSS: 7.5v3.1HighModified
Published 29-09-2021Last modified 04-08-2024
Vulnerability summary
CVE-2021-35945 is a high (CVSS 7.5) Classic Buffer Overflow vulnerability in couchbase couchbase_server. EPSS estimates a 1.09% chance of exploitation in the next 30 days, higher than 64.9% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
1.09%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 29-09-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Couchbase Server 6.5.x, 6.6.0 through 6.6.2, and 7.0.0, has a Buffer Overflow. A specially crafted network packet sent from an attacker can crash memcached.
CVSS metrics
2 scores · 1 source · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesSingle source
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
1.09%
Chance of exploitation in the next 30 days
Percentile
65%
Versus all other CVEs
30-day change
0.00 pp
From 1.09% on 19-09-2026
19-09-202619-10-2026
EPSS score1.09%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Couchbase1 product
- couchbase_serverEOL≥ 4.5.0, ≤ 5.5.6 | ≥ 6.0.0, ≤ 6.0.5 | ≥ 6.5.0, ≤ 6.5.2 | ≥ 6.6.0, ≤ 6.6.2 | 7.0.0
1 vendor · 1 product
References
2 links- docs.couchbase.com/server/current/release-notes/relnotes.htmlX Refsource MISCRelease NotesVendor Advisory