CVE-2020-27746

Slurm before 19.05.8 and 20.x before 20.02.6 exposes Sensitive Information to an Unauthorized Actor because xauth for X11 magic cookies is affected by a race condition in a read operation on the /proc filesystem.

Published: 2020-11-27 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-27746 is rated Low Risk (33.6/100): CVSS Low severity, with medium exploitation likelihood (EPSS 0.82%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-27746

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.41% 0.82% +0.42%
2 2026-02-03 0.27% 0.41% +0.14%
3 2025-03-30 — 0.27% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-27746

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.7 3.1 LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.2 1.4 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2020-27746

OS Trackers for CVE-2020-27746

vendor priority summary link
debian unimportant CVE-2020-27746 unimportant priority: Debian including 1 source packages (slurm-wlm), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2020-27746
suse medium CVE-2020-27746 severity moderate: SUSE including 321 source package names (libnss_slurm2, libnss_slurm2-20.02.6-3.3.4, …), 684 product×package rows across 18 product lines (SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS, SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS, … (18 product lines)): Fixed 571, Known Not Affected 113. https://www.suse.com/security/cve/CVE-2020-27746/
ubuntu medium CVE-2020-27746 medium priority: Ubuntu including 1 source packages (slurm-llnl), 15 status rows across 15 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, trusty, upstream, xenial): DNE 9, not-affected 2, released 2, ignored 1, needs-triage 1. https://ubuntu.com/security/CVE-2020-27746

Affected software / configurations for CVE-2020-27746

Vendor Product Version Raw CPE
schedmd slurm < 19.05.8 cpe:2.3:a:schedmd:slurm:*:*:*:*:*:*:*:*
schedmd slurm >= 20.0.0, < 20.02.6 cpe:2.3:a:schedmd:slurm:*:*:*:*:*:*:*:*
debian debian_linux 10.0 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

References for CVE-2020-27746

URL Tags
https://www.debian.org/security/2021/dsa-4841 Third Party Advisory
https://www.schedmd.com/news.php Patch Vendor Advisory
cvelogic Threat Intelligence