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NVD / CVE Program· CNA redhat

CVE-2026-61477: Libvirt: libvirt: newline injection in network xml dns txt/srv fields allows dnsmasq config directive injection

Noroxi assessment

Priority: Monitor (action score 9/100)

  • 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: 0.16% (FIRST EPSS).
  • Someone with local access to the system can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: azl3 libvirt 10.10.0-2 on Azure Linux 3.0 10.10.0-3.

Low priority for now. Upgrade to azl3 libvirt 10.10.0-2 on Azure Linux 3.0 10.10.0-3 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

An injection vulnerability was found in libvirt's virtual network driver. The network XML parser does not strip newline characters from DNS TXT record value attributes and SRV record domain/target attributes. These values are written verbatim into the dnsmasq configuration file generated by the network driver, allowing a user with permission to define virtual networks to inject arbitrary dnsmasq configuration directives such as dhcp-script, leading to arbitrary command execution as root.

LowCVSS 2.3 · v3.1—No exploit Fix available
Published
Aug 7, 2026
Updated
Aug 14, 2026
EPSS
0.1% · 5th percentile

Report tools

JSON

Action score

9

Monitor

Low priority for now.

CVSS
9 / 40 · 2.3 / 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 · redhat
2.3
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.

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  • 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-2026-61477

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.

—

Versions reported by the vendor

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

  • Red Hat Red Hat Enterprise Linux 10

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 8

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 9

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux for NVIDIA 26

    • all versionsaffected

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12libvirtfrom 0—
Debian:13libvirtbefore 11.3.0-3+deb13u311.3.0-3+deb13u3
Debian:14libvirtbefore 12.6.0-112.6.0-1
openSUSE:Leap 16.0libvirtbefore 11.4.0-160000.5.111.4.0-160000.5.1
SUSE:Linux Enterprise Micro 5.3libvirtbefore 8.0.0-150400.7.17.18.0.0-150400.7.17.1
SUSE:Linux Enterprise Micro 5.5libvirtbefore 9.0.0-150500.6.29.19.0.0-150500.6.29.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7libvirtbefore 11.0.0-150700.4.27.111.0.0-150700.4.27.1
SUSE:Linux Enterprise Server 12 SP5-LTSSlibvirtbefore 5.1.0-13.48.15.1.0-13.48.1
SUSE:Linux Enterprise Server 15 SP6-LTSSlibvirtbefore 10.0.0-150600.8.18.110.0.0-150600.8.18.1
SUSE:Linux Micro 6.0libvirtbefore 10.0.0-5.110.0.0-5.1
SUSE:Linux Micro 6.1libvirtbefore 10.0.0-slfo.1.1_3.110.0.0-slfo.1.1_3.1
SUSE:Linux Micro 6.2libvirtbefore 11.4.0-160000.5.111.4.0-160000.5.1

Same product

red hat: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-10230Samba: command injection in wins server hook script
    52Plan
  • CVE-2026-4631Cockpit: cockpit: unauthenticated remote code execution due to ssh command-line argument injection
    44Plan
  • CVE-2026-76578Ipa: freeipa: freeipa: unauthenticated ldap client can obtain administrator credentials via the self-managed-token aci
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-7867Aug 6, 2026 · Udisks2: udisks2: local privilege escalation via as-user option spoofing
    31Monitor
  • ← EarlierCVE-2026-18938Aug 7, 2026 · P11-kit: integer overflow in rpc attribute-array length calculation can under-allocate nested attribute storage on 32 bit systems
    24Monitor
  • Later →CVE-2026-15816Aug 7, 2026 · Dracut: dracut: root code execution via unescaped error message written to sourced emergency hook script in die()
    30Monitor

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
azl3 libvirt 10.10.0-2 on Azure Linux 3.010.10.0-3 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:libvirt11.3.0-3+deb13u3 · Debian:13Package registry (OSV)
opensuse:libvirt11.4.0-160000.5.1 · openSUSE:Leap 16.0Package registry (OSV)
suse:libvirt10.0.0-5.1 · SUSE:Linux Micro 6.0Package 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

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

  • CVE-2026-1631310 days apartSg3_utils: sg3_utils: arbitrary command execution via udev property injection in sg_inq --export
    30Monitor
  • CVE-2026-3234148 days apartMod_proxy_cluster: mod_proxy_cluster: response body corruption via crlf injection
    17Monitor
  • CVE-2026-28296162 days apartGvfs: ftp gvfs backend: arbitrary ftp command injection via crlf sequences in file paths
    17Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

  • CVE-2026-165278 days apartPcp: pcp pmproxy: unauthenticated access to /store endpoint allows bypassing pmcd access rules
    29Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • Administrator privileges are required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

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

Weakness class (CWE)

CWE-93 · Improper Neutralization of CRLF Sequences ('CRLF Injection')

CVSS vector

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

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.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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References

Show all references (2 more)

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

All records