9.8

CVE-2021-27135: debian debian_linux

Modified
AliasesMGASA-2021-0094SUSE-SU-2021:14747-1SUSE-SU-2021:2011-1
Published 10-02-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-27135 is a critical (CVSS 9.8) vulnerability in debian debian_linux. EPSS estimates a 7.84% chance of exploitation in the next 30 days, higher than 94.6% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.8 (NVD); no exploitation reported by the 5 checked sources; EPSS 8% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
7.84%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2024:11527-1

Timeline

  1. 10-02-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

xterm before Patch #366 allows remote attackers to execute arbitrary code or cause a denial of service (segmentation fault) via a crafted UTF-8 combining character sequence.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

7.84%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

No change 0.00 pp

From 7.84% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Suse30 products
  • xterm&distro=HPE Helion OpenStack 8< 308-5.3.1
  • xterm&distro=SUSE Enterprise Storage 6< 330-4.3.1
  • xterm&distro=SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS< 330-4.3.1
  • xterm&distro=SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS< 330-4.3.1
  • xterm&distro=SUSE Linux Enterprise High Performance Computing 15-ESPOS< 330-4.3.1
Redhat5 products
  • xterm< 0:331-1.el8_3.2 | < 0:295-3.el7_9.1 | < 0:331-1.el8_1.1 | < 0:331-1.el8_2.1
  • xterm-debuginfo< 0:331-1.el8_3.2 | < 0:295-3.el7_9.1 | < 0:331-1.el8_1.1 | < 0:331-1.el8_2.1
  • xterm-debugsource< 0:331-1.el8_3.2 | < 0:331-1.el8_1.1 | < 0:331-1.el8_2.1
  • xterm-resize< 0:331-1.el8_3.2 | < 0:331-1.el8_1.1 | < 0:331-1.el8_2.1
  • xterm-resize-debuginfo< 0:331-1.el8_3.2 | < 0:331-1.el8_1.1 | < 0:331-1.el8_2.1
Debian2 products
Mageia2 products
  • xterm< 344-1.1.mga7
  • xterm< 363-1.1.mga8
Opensuse2 products
  • xterm&distro=openSUSE Leap 15.2< 330-lp152.6.3.1
  • xterm&distro=openSUSE Leap 15.3< 330-11.3.1
Alpine1 product
  • xterm< 367-r0 | < 366-r0
Fedoraproject1 product
Invisible-island1 product
Ubuntu1 product
  • xterm< 322-1ubuntu1.2 | < 330-1ubuntu2.2 | < 353-1ubuntu1.20.04.2

9 vendors · 45 products

References

42 links
Show all 42 references