CVE-2026-5435
Potential buffer overflow in ns_sprintrrf TSIG handling path
Severity Score
7.3
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Attend
*SSVC
Descriptions
The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records.
*Credits:
shinobu
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Attend
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2026-04-02 CVE Reserved
- 2026-04-28 CVE Published
- 2026-04-28 CVE Updated
- 2026-05-06 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-787: Out-of-bounds Write
CAPEC
- CAPEC-100: Overflow Buffers
References (2)
| URL | Tag | Source |
|---|---|---|
| https://inbox.sourceware.org/libc-announce/7a655d55-276f-41fe-b550-feb3ebb2ce91@redhat.com/T/#u | Mailing List | |
| https://sourceware.org/bugzilla/show_bug.cgi?id=34033 | Issue Tracking |
| URL | Date | SRC |
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| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| The GNU C Library Search vendor "The GNU C Library" | Glibc Search vendor "The GNU C Library" for product "Glibc" | <= 2.2 Search vendor "The GNU C Library" for product "Glibc" and version " <= 2.2" | en |
Affected
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