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NVD / CVE Program· CNA mitre

CVE-2026-41989: Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt.

MediumCVSS 6.7 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 26/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.18% (FIRST EPSS).
  • Someone with local access to the system can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: gnupg Libgcrypt 1.10.4, 1.11.3, 1.12.2; azl3 libgcrypt 1.10.3-1 on Azure Linux 3.0 1.10.3-2; azl3 libgcrypt 1.10.3-2 on Azure Linux 3.0 1.10.3-2.

Low priority for now. Upgrade to gnupg Libgcrypt 1.10.4, 1.11.3, 1.12.2; azl3 libgcrypt 1.10.3-1 on Azure Linux 3.0 1.10.3-2; azl3 libgcrypt 1.10.3-2 on Azure Linux 3.0 1.10.3-2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Published
Apr 23, 2026
Updated
Nov 10, 2026
EPSS
0.1% · 7th percentile

Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · mitre
6.7
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-41989

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
gnupglibgcrypt

Versions reported by the vendor

Affected version ranges reported by the assigning authority (mitre). Independent of NVD's CPE analysis and usually ahead of it.

  • gnupg Libgcrypt

    • 1.8.8 and later · before 1.10.4affected · semver
    • 1.11.0 and later · before 1.11.3affected · semver
    • 1.12.0 and later · before 1.12.2affected · semver

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • gnupg libgcrypt1.8.8 and later · before 1.10.4
  • gnupg libgcrypt1.11.0 and later · before 1.11.3
  • gnupg libgcrypt1.12.0 and later · before 1.12.2

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10libgcryptbefore 1.11.0-7.el10_21.11.0-7.el10_2
AlmaLinux:10libgcrypt-develbefore 1.11.0-7.el10_21.11.0-7.el10_2
AlmaLinux:8libgcryptbefore 1.8.5-8.el8_101.8.5-8.el8_10
AlmaLinux:8libgcrypt-develbefore 1.8.5-8.el8_101.8.5-8.el8_10
AlmaLinux:9libgcryptbefore 1.10.0-13.el9_81.10.0-13.el9_8
AlmaLinux:9libgcrypt-develbefore 1.10.0-13.el9_81.10.0-13.el9_8
Debian:12libgcrypt20before 1.10.1-3+deb12u11.10.1-3+deb12u1
Debian:13libgcrypt20before 1.11.0-7+deb13u11.11.0-7+deb13u1
Debian:14libgcrypt20before 1.12.2-11.12.2-1
openSUSE:Leap 16.0libgcryptbefore 1.12.1-160000.3.11.12.1-160000.3.1
Red Hat:enterprise_linux_eus:10.0libgcryptbefore 0:1.11.0-5.el10_0.10:1.11.0-5.el10_0.1
Red Hat:enterprise_linux:10.2libgcryptbefore 0:1.11.0-7.el10_20:1.11.0-7.el10_2
Red Hat:enterprise_linux:10.2libgcrypt-debuginfobefore 0:1.11.0-7.el10_20:1.11.0-7.el10_2
Red Hat:enterprise_linux:10.2libgcrypt-debugsourcebefore 0:1.11.0-7.el10_20:1.11.0-7.el10_2
Red Hat:enterprise_linux:10.2libgcrypt-develbefore 0:1.11.0-7.el10_20:1.11.0-7.el10_2
Red Hat:enterprise_linux:10.2libgcrypt-devel-debuginfobefore 0:1.11.0-7.el10_20:1.11.0-7.el10_2
Red Hat:enterprise_linux:8::baseoslibgcryptbefore 0:1.8.5-8.el8_100:1.8.5-8.el8_10
Red Hat:enterprise_linux:8::baseoslibgcrypt-debuginfobefore 0:1.8.5-8.el8_100:1.8.5-8.el8_10
Red Hat:enterprise_linux:8::baseoslibgcrypt-debugsourcebefore 0:1.8.5-8.el8_100:1.8.5-8.el8_10
Red Hat:enterprise_linux:8::baseoslibgcrypt-develbefore 0:1.8.5-8.el8_100:1.8.5-8.el8_10
Red Hat:enterprise_linux:8::baseoslibgcrypt-devel-debuginfobefore 0:1.8.5-8.el8_100:1.8.5-8.el8_10
Red Hat:enterprise_linux:9::appstreamlibgcrypt-debuginfobefore 0:1.10.0-13.el9_80:1.10.0-13.el9_8
Red Hat:enterprise_linux:9::appstreamlibgcrypt-debugsourcebefore 0:1.10.0-13.el9_80:1.10.0-13.el9_8
Red Hat:enterprise_linux:9::appstreamlibgcrypt-develbefore 0:1.10.0-13.el9_80:1.10.0-13.el9_8

+19

Same product

gnupg: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-33560Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel…
    31Monitor
  • CVE-2021-3345_gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer overflow when the digest final function…
    31Monitor
  • CVE-2018-6829cipher/elgamal.c in Libgcrypt through 1.8.2, when used to encrypt messages directly, improperly encodes plaintexts, which allows attackers…
    31Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2019-12904Jun 20, 2019 · In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are…
    24Monitor
  • ← EarlierCVE-2021-40528Sep 6, 2021 · The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic…
    23Monitor
  • Later →CVE-2026-41990Apr 23, 2026 · Libgcrypt before 1.12.2 mishandles Dilithium signing.
    16Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
gnupg Libgcrypt1.10.4Vendor (CNA)
gnupg Libgcrypt1.11.3Vendor (CNA)
gnupg Libgcrypt1.12.2Vendor (CNA)
azl3 libgcrypt 1.10.3-1 on Azure Linux 3.01.10.3-2 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 libgcrypt 1.10.3-2 on Azure Linux 3.01.10.3-2 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 libgcrypt 1.10.3-1 on CBL-Mariner 2.0Release NotesMicrosoft (MSRC)
almalinux:libgcrypt1.8.5-8.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:libgcrypt-devel1.8.5-8.el8_10 · AlmaLinux:8Package registry (OSV)
debian:libgcrypt201.10.1-3+deb12u1 · Debian:12Package registry (OSV)
opensuse:libgcrypt1.12.1-160000.3.1 · openSUSE:Leap 16.0Package registry (OSV)
red hat:libgcrypt0:1.8.5-8.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:libgcrypt-debuginfo0:1.8.5-8.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:libgcrypt-debugsource0:1.8.5-8.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:libgcrypt-devel0:1.8.5-8.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:libgcrypt-devel-debuginfo0:1.8.5-8.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
rocky linux:libgcrypt0:1.8.5-8.el8_10 · Rocky Linux:8Package registry (OSV)
suse:libgcrypt1.12.1-160000.3.1 · SUSE:Linux Micro 6.2Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-419900 days apartLibgcrypt before 1.12.2 mishandles Dilithium signing.
    16Monitor

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
none
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records