CVE-2021-3796: debian debian_linux Use After Free
CVSS: 8.2v3.0HighModified
AliasesALPINE-CVE-2021-3796UBUNTU-CVE-2021-3796DEBIAN-CVE-2021-3796
Published 15-09-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-3796 is a high (CVSS 8.2) Use After Free vulnerability in debian debian_linux. EPSS estimates a 1.74% chance of exploitation in the next 30 days, higher than 77.3% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
8.2/10
010
High · v3.0 (CVE.org)EPSS score
1.74%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 9 · Related 6Timeline
- 15-09-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
vim is vulnerable to Use After Free
CVSS metrics
8 scores · 5 sources · 3 versionsHigh 7.3Preferred score · OSV · Alpine (Ecosystem advisory) · calculated from vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated7.3HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:H
- OSV · DebianEcosystem advisory · calculated7.3HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:H
- NVDNIST7.3HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:H
High 8.2Preferred score · CVE.org (CNA)
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:LSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated8.2HighCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L
- NVDNIST8.2HighCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.74%
Chance of exploitation in the next 30 days
Percentile
77%
Versus all other CVEs
30-day change
0.00 pp
From 1.74% on 18-09-2026
18-09-202618-10-2026
EPSS score1.74%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (huntr.dev)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian2 products
- vim< 2:8.2.3455-1
- debian_linuxEOL9.0
Alpine1 product
- vim< 8.2.3437-r0
Fedoraproject1 product
- fedoraEOL33 | 34 | 35
Netapp1 product
Ubuntu1 product
- vim< 2:7.4.052-1ubuntu3.1+esm3 | < 2:7.4.1689-3ubuntu1.5+esm2 | < 2:8.0.1453-1ubuntu1.6 | < 2:8.1.2269-1ubuntu5.3
6 vendors · 8 products
References
15 links- huntr.dev/bounties/ab60b7f3-6fb1-4ac2-a4fa-4d592e08008dREPORTExploitIssue TrackingPatchThird Party Advisory
- lists.fedoraproject.org/archives/…Vendor Advisory
- lists.fedoraproject.org/archives/…Vendor Advisory
- lists.fedoraproject.org/archives/…Vendor Advisory
- security.netapp.com/advisory/ntap-20221118-0004/Third Party Advisory
