CVE-2021-26675: debian debian_linux Out-of-bounds Write
Vulnerability summary
CVE-2021-26675 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 1.36% chance of exploitation in the next 30 days, higher than 71.7% of scored vulnerabilities.
Not severe (CVSS 8.8, adjacent network); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 4Timeline
- 09-02-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
A stack-based buffer overflow in dnsproxy in ConnMan before 1.39 could be used by network adjacent attackers to execute code.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · AlpineEcosystem advisory · calculated8.8HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.36%
Chance of exploitation in the next 30 days
Percentile
72%
Versus all other CVEs
30-day change
Increase +0.06 pp
From 1.30% on 05-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian2 products
- connman< 1.36-2.1
- debian_linuxEOL9.0 | 10.0
Alpine1 product
- connman< 1.39-r0
Intel1 product
- connman< 1.39
Opensuse1 product
- leapEOL15.2
Ubuntu1 product
- connman< 1.35-6ubuntu0.1~esm1 | < 1.36-2ubuntu0.1
5 vendors · 6 products
References
13 links- git.kernel.org/pub/scm/network/connman/connman.git/tree/ChangeLogX Refsource CONFIRMREPORTRelease NotesThird Party Advisory
- www.openwall.com/lists/oss-security/2021/02/08/2X Refsource MISCREPORTMailing ListThird Party Advisory
lists.debian.org/debian-lts-announce/2021/02/msg00013.htmlMailing ListX Refsource MLISTThird Party Advisory