CVE-2021-26676: debian debian_linux
Vulnerability summary
CVE-2021-26676 is a medium (CVSS 6.5) vulnerability in debian debian_linux. EPSS estimates a 1.18% chance of exploitation in the next 30 days, higher than 67.7% of scored vulnerabilities.
Not severe (CVSS 6.5, 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
gdhcp in ConnMan before 1.39 could be used by network-adjacent attackers to leak sensitive stack information, allowing further exploitation of bugs in gdhcp.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · AlpineEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
1.18%
Chance of exploitation in the next 30 days
Percentile
68%
Versus all other CVEs
30-day change
Increase +0.02 pp
From 1.16% 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 causeNo weakness data has been published for this record.
Affected 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< 1.38-r4 | < 1.39-r0
Intel1 product
- connman< 1.39
Opensuse1 product
- leapEOL15.2
Ubuntu1 product
- connman< 1.21-1.2+deb8u1ubuntu0.1~esm1 | < 1.35-6ubuntu0.1~esm1 | < 1.36-2ubuntu0.1
5 vendors · 6 products
References
14 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