CWE-193

Off-by-one Error

A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.

CVE-2026-41502 (GCVE-0-2026-41502)

Vulnerability from cvelistv5 – Published: 2026-04-24 19:40 – Updated: 2026-04-25 01:53
VLAI
Title
BACnet Stack: Off-by-One Out-of-Bounds Read in ReadPropertyMultiple Object ID Decoder
Summary
BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to 1.4.3, an off-by-one out-of-bounds read vulnerability in bacnet-stack's ReadPropertyMultiple service decoder allows unauthenticated remote attackers to read one byte past an allocated buffer boundary by sending a crafted RPM request with a truncated object identifier. The vulnerability is in rpm_decode_object_id(), which checks apdu_len < 5 but then accesses all 6 byte positions (indices 0-5) — consuming 1 byte for the context tag, 4 bytes for the object ID, then reading apdu[5] for the opening tag check. A 5-byte input passes the length check but causes a 1-byte OOB read, leading to crashes on embedded BACnet devices. The vulnerability exists in src/bacnet/rpm.c and affects any deployment that enables the ReadPropertyMultiple confirmed service handler (enabled by default in the reference server). This vulnerability is fixed in 1.4.3.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
bacnet-stack bacnet-stack Affected: >= 1.4.0, < 1.4.3
Create a notification for this product.
Show details on NVD website
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CVE-2026-42015 (GCVE-0-2026-42015)

Vulnerability from cvelistv5 – Published: 2026-05-26 21:29 – Updated: 2026-06-02 15:34
VLAI
Title
Gnutls: gnutls: memory corruption due to off-by-one error in pkcs#12 bag handling
Summary
A flaw was found in gnutls. An off-by-one error exists in the PKCS#12 bag element bounds check. This vulnerability allows an remote attacker to write past the internal array of a PKCS#12 bag when appending to a bag that already contains 32 elements. This memory corruption could lead to a denial of service (DoS) or potentially other unspecified impacts.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:20611 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20612 vendor-advisoryx_refsource_REDHAT
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https://bugzilla.redhat.com/show_bug.cgi?id=2467678 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:3.8.10-4.el10_2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:3.6.16-8.el8_10.6 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/o:redhat:enterprise_linux:8::baseos
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:3.8.10-4.el9_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/o:redhat:enterprise_linux:9::baseos
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
 Create a notification for this product.
Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
 Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
 Create a notification for this product.
Date Public
2026-04-29 00:00
Credits
Red Hat would like to thank Zou Dikai for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-43860 (GCVE-0-2026-43860)

Vulnerability from cvelistv5 – Published: 2026-05-04 05:45 – Updated: 2026-05-04 18:20
VLAI
Summary
mutt before 2.3.2 sometimes truncates the hash_passwd by one byte for IMAP auth_cram MD5 digest.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
mutt mutt Affected: 0 , < 2.3.2 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-43964 (GCVE-0-2026-43964)

Vulnerability from cvelistv5 – Published: 2026-05-04 18:10 – Updated: 2026-05-04 22:21
VLAI
Summary
Postfix before 3.8.16, 3.9 before 3.9.10, and 3.10 before 3.10.9 sometimes allows a buffer over-read and process crash via an enhanced status code that lacks text after the third number.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Postfix Postfix Affected: 2.3 , < 3.8.16 (custom)
Affected: 3.9 , < 3.9.10 (custom)
Affected: 3.10 , < 3.10.9 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-44065 (GCVE-0-2026-44065)

Vulnerability from cvelistv5 – Published: 2026-05-21 07:34 – Updated: 2026-05-21 12:49
VLAI
Title
Off-by-two in papd lp_write()
Summary
An off-by-two error in lp_write() in papd in Netatalk 2.0.0 through 4.4.2 allows an adjacent network attacker to modify limited data or cause a minor service disruption via crafted print data.
Severity
3.7 (Low)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Netatalk Netatalk Affected: 2.0.0 , ≤ 4.4.2 (semver)
Unaffected: 4.5.0 (semver)
Create a notification for this product.
Date Public
2026-05-13 00:00
Credits
Arjun Basnet from Securin
Show details on NVD website
To clipboard 

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CVE-2026-44603 (GCVE-0-2026-44603)

Vulnerability from cvelistv5 – Published: 2026-05-07 03:21 – Updated: 2026-05-07 14:58
VLAI
Summary
Tor before 0.4.9.7 has an out-of-bounds read by one byte via a malformed BEGIN cell, aka TROVE-2026-007.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
torproject Tor Affected: 0 , < 0.4.9.7 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-45232 (GCVE-0-2026-45232)

Vulnerability from cvelistv5 – Published: 2026-05-20 00:45 – Updated: 2026-05-20 17:31 X_Open Source
VLAI
Title
Rsync < 3.4.3 Off-by-One Stack Write via HTTP Proxy
Summary
Rsync versions before 3.4.3 contain an off-by-one out-of-bounds stack write vulnerability in the establish_proxy_connection() function in socket.c that allows network attackers to corrupt stack memory by sending a malformed HTTP proxy response. Attackers can exploit this by positioning themselves between the client and proxy or controlling the proxy server to send a response line of 1023 or more bytes without a newline terminator, causing a null byte to be written to an out-of-bounds stack address when the RSYNC_PROXY environment variable is set.
Severity
2.1 (Low)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
RsyncProject rsync Affected: 0 , < 3.4.3 (semver)
Create a notification for this product.
Date Public
2026-05-19 00:00
Credits
Michal Ruprich
Show details on NVD website
To clipboard 

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CVE-2026-45358 (GCVE-0-2026-45358)

Vulnerability from cvelistv5 – Published: 2026-06-10 21:26 – Updated: 2026-06-11 14:19
VLAI
Title
ImageMagick: Out-of-Bounds Read of a single byte in meta encoder
Summary
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-47 and 7.1.2-22, an off by one in the meta encoder could result in an out of bounds read of a single byte in the meta encoder. This issue has been patched in versions 6.9.13-47 and 7.1.2-22.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
ImageMagick ImageMagick Affected: < 6.9.13-47
Affected: < 7.1.2-22
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-45380 (GCVE-0-2026-45380)

Vulnerability from cvelistv5 – Published: 2026-06-10 20:00 – Updated: 2026-06-11 14:13
VLAI
Title
bit7z: Path Traversal via Null Byte Injection from `gcount()` Off-by-One in `restoreSymlink()`
Summary
bit7z is a cross-platform C++ static library that allows the compression/extraction of archive files. Prior to version 4.0.12, a one-byte off-by-one error in SafeOutPathBuilder::restoreSymlink() allows an attacker to craft a .7z archive that, when extracted with bit7z on any non-Windows platform, creates a symlink escaping the intended output directory. Subsequent archive entries extracted through this symlink write arbitrary files outside the extraction directory with the permissions of the extracting process. This issue has been patched in version 4.0.12.
Severity
3.6 (Low)
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-193 - Off-by-one Error
Assigner
References
Impacted products
Vendor Product Version
rikyoz bit7z Affected: < 4.0.12
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CVE-2026-46559 (GCVE-0-2026-46559)

Vulnerability from cvelistv5 – Published: 2026-06-10 21:45 – Updated: 2026-06-11 16:14
VLAI
Title
ImageMagick: Heap Buffer Over-Write of a single byte in the JP2 encoder
Summary
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-23, an incorrect check in the JP2 will result in an heap buffer over-write of a single byte when specifying certain options. This issue has been patched in versions 6.9.13-48 and 7.1.2-23.
Severity
4 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
ImageMagick ImageMagick Affected: < 6.9.13-48
Affected: < 7.1.2-23
Create a notification for this product.
Show details on NVD website
To clipboard 

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Mitigation

Phase: Implementation

Description:

  • When copying character arrays or using character manipulation methods, the correct size parameter must be used to account for the null terminator that needs to be added at the end of the array. Some examples of functions susceptible to this weakness in C include strcpy(), strncpy(), strcat(), strncat(), printf(), sprintf(), scanf() and sscanf().

No CAPEC attack patterns related to this CWE.

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