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01 Record

CVE-2026-27143

Missing bound checks can lead to memory corruption in safe Go in cmd/compile

CriticalPUBLISHEDCNA: Go
CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
View raw JSON

02 Description

Missing bound checks can lead to memory corruption in safe Go in cmd/compile

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.53% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 44.9% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-07-25.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-04-08 01:06Z6 MO AGO
Last updated
2026-04-13 18:20Z6 MO AGO
Reserved
2026-02-17
Assigning CNA
Go
Record state
PUBLISHED
Severity
Critical (CVSS 9.8)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-733Compiler Optimization Removal or Modification of Security-critical CodeBase
Data version
5.2
Document digest
80df4f78239c698bfa1cbdc4631c6799c381fe37c06e486add395e8b06d49041

05 Affected products

VendorProductVersionsPlatforms
Go toolchaincmd/compile0 to < 1.25.9, 1.26.0-0 to < 1.26.2—

06 References

07 Fixed in

AlmaLinux 8

  • delve
    Fixed in 1.25.2-1.module_el8.10.0+4074+24330916
  • go-toolset
    Fixed in 1.25.9-1.module_el8.10.0+4167+2e2e20dd
  • golang
    Fixed in 1.25.9-1.module_el8.10.0+4167+2e2e20dd
  • golang-bin
    Fixed in 1.25.9-1.module_el8.10.0+4167+2e2e20dd
  • golang-docs
    Fixed in 1.25.9-1.module_el8.10.0+4167+2e2e20dd
  • golang-misc
    Fixed in 1.25.9-1.module_el8.10.0+4167+2e2e20dd
  • golang-race
    Fixed in 1.25.9-1.module_el8.10.0+4167+2e2e20dd
  • golang-src
    Fixed in 1.25.9-1.module_el8.10.0+4167+2e2e20dd
  • golang-tests
    Fixed in 1.25.9-1.module_el8.10.0+4167+2e2e20dd

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • delve
    Fixed in 1.25.2-1.module_el8.10.0+4074+24330916
  • go-toolset
    Fixed in 1.25.9-1.module_el8.10.0+4167+2e2e20dd
  • golang
    Fixed in 1.25.9-1.module_el8.10.0+4167+2e2e20dd
  • golang-bin
    Fixed in 1.25.9-1.module_el8.10.0+4167+2e2e20dd
  • golang-docs
    Fixed in 1.25.9-1.module_el8.10.0+4167+2e2e20dd
  • golang-misc
    Fixed in 1.25.9-1.module_el8.10.0+4167+2e2e20dd
  • golang-race
    Fixed in 1.25.9-1.module_el8.10.0+4167+2e2e20dd
  • golang-src
    Fixed in 1.25.9-1.module_el8.10.0+4167+2e2e20dd
  • golang-tests
    Fixed in 1.25.9-1.module_el8.10.0+4167+2e2e20dd

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • golang-1.24
    No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • golang-1.26
    Fixed in 1.26.2-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • golang-1.20
    No fix yet
  • golang-1.21
    No fix yet
  • golang-1.22
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • golang-1.20
    No fix yet
  • golang-1.21
    No fix yet
  • golang-1.22
    No fix yet
  • golang-1.23
    No fix yet
  • golang-1.24
    No fix yet
  • golang-1.25
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • golang-1.21
    No fix yet
  • golang-1.22
    No fix yet
  • golang-1.23
    No fix yet
  • golang-1.24
    No fix yet
  • golang-1.25
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 25.10

  • golang-1.23
    No fix yet
  • golang-1.24
    No fix yet
  • golang-1.25
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.04 LTS

  • golang-1.23
    No fix yet
  • golang-1.24
    No fix yet
  • golang-1.25
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.